The Breed History
This ancient breed, a perennial favorite, is often referred to simply
as the Siamese. Evidence of their development was first recorded
in Siam (now Thailand) in the fifteenth century, though only in
seal point variety. These cats were keenly treasured by royalty, and
for a while, ownership was limited to royalty. Early cats were of
the Traditional Applehead conformation, and had a heavier body
build than the modern version of the Siamese cat. They were first
exported to America around 1878. The first breed standard was
drawn up in 1892. CFA accepted the breed in 1927. Blue point did
not become a recognized breed color until 1934.
Physical Characteristics
Weight: Female 6-8 lb (2.5-3.5 kg), Male 8-12 lb (3.5-5.5 kg)
Coat: Sleek, short, fine, single, close lying. Accepted colors in North
America registries include:
Seal point [fawn body with brown-black points]
Blue point [deep silver-slate blue points with gray body]
Lilac point [white body and gray-pink points; is frost]
Chocolate point [ivory body with rich chocolate points]
Points include a masked face, tail, paws, and ears. In some registries,
particularly in Europe, the Siamese can be registered in additional
colors. These other colors are recognized in America as the
Colorpoint Shorthair breed. The Himalayan factor is the basis for
the pointing pattern (cs cs), and is an autosomal recessive. Coloring
darkens somewhat with age. High ambient temperatures lead to
lighter pointing.
Eyes: Always an intense sapphire blue. Eyes are close-set, almond
shaped and moderate in size.
Points of Conformation: The distinctly wedge-shaped long head
is triangular, and large ears are placed to continue that facial plane
along their outer margins. Ear tips are pointed. No break; the face
is flat on profile, the nose is long and straight. The body is long,
lithe, fine-boned, and the neck is fine. The limbs are long and paws
are small and oval. The tail is fine, long and tapering with no kinks,
reaching the tip of the hind paw when drawn downwards.
The Traditional or Applehead Siamese is a distinct subtype within
the breed. The Traditional has a rounder body and head, and is not a
show type but is registered as a Siamese cat in almost all registries.
The Tonkinese is quite close in body type to the Applehead.
Grooming: The Siamese cat has low grooming needs. Just a quick
wipe with hand or chamois is needed.
Recognized Behavior Issues and Traits
Reported breed characteristics include: Playful; even exuberant,
affectionate, talkative with a loud voice, at some times when
yowling is said to be like a baby crying. High intelligence, and have
high attention needs, forming a very strong bond with their favorite
person. Excellent jumpers, they need play time. Some can be
demanding at times. They are really gregarious; good with pets and
children. Will more readily leash train than most other breeds; often
referred to as dog-like in their personality traits.
Normal Breed Variations
They reach sexual maturity early.
100% type A blood type was reported.
Drug Sensitivities
None reported in the literature.
Inherited Diseases
Imperfect (temperature sensitive, t-s) Albinism/Himalayan
Pointing Gene: This genetic change produces a so-called
imperfect albino condition because of the partial loss of tyrosinase
function-where the skin is cooler, the pigment production is
normal and in warm areas, melanin production does not occur as
the enzyme does not function at the higher temperatures. Siamese
pointed cats are homozygous (cs cs) at the pointing gene locus. This
genotype is part of an allele series [true albinism (ca ca)], Siamese
(cs cs), Mink Tonkinese (cb cs), Burmese (cb cb)] listed in sequence
here from more to less heavily expressed phenotype.2 Albinism has
other expression apart from pointing effects.
Gene effects on Coat: Kittens are born white. They gradually
develop points starting before weaning and it is not until about
one year of age for many cats that the points are fully developed.
Note that if the veterinary health care team members shave for
intravenous access anywhere but in the darkest fur, the fur will
grow back in as a dark patch initially, and only very gradually will it
begin to match the surrounding coat color. This is a consideration
for show cats. Older cats become gradually darker.
Gene effects on Vision: Congenitally abnormal visual pathways
are associated with ts-albinism in the Siamese:
A. Reduced binocular vision and reduced visual acuity due to
excess decussation of fibers at the optic chiasma. Melanin
pigment in retinal pigmented epithelium normally plays a
supporting role in axonal growth from the eye to the brain and
so central pathways (retino-geniculo-cortical) are altered when
this regulator is absent as in Siamese ts-albinism. Retinal X cellshave a role in spatial resolution and altered numbers lead to
reduced spatial resolution/contrast sensitivity in vision. A few
functional binocular cells are left in the brain, and more in the
supra-sylvian areas allow for coarse stereopsis.
These aforementioned congenitally abnormal pathways are
associated with:
Convergent Strabismus (Esotropia): So-called "cross-eyed"
cats used to be more common. This condition does not appear to
adversely affect functional vision because cats are compensating
for impaired stereopsis, even though the visual pathways remain
abnormal.6 Affected Siamese newborns have divergent strabismus;
a normal finding in neonates, but as they mature, by a few months
of age eyes are parallel but then migrate inward to compensate for
deviated central vision pathways. The abnormal eye position helps
the cat compensate for visual pathway defect.
Nystagmus: Also a compensating strategy that allows the cats to
work around the hard wired defect. Nystagmus may improve with age
and disappear briefly when a cat focuses on a subject of interest.6
Both of these secondary signs result from the compensation
for abnormal processing of unconscious light responses and are
not primary structural defects, just responses . Abnormalities in
the visual pathways occur in all Siamese pointed cats but the
phenotype varies. The resulting changes in vision are complex, but it
is notable that a portion of the cat's visual field is inverted/opposite
to the normal display. All Siamese cats lack normal binocular vision.
New research shows that the c(b) allele of the albino locus gene
are variants on the D1 chromosome specifying tyrosinase and the
chocolate (b) and cinnamon (b(9l)) a second allele at the B (brown)
locus are nucleotide variants of TYRP1 (chromosome D4).
The mutations are reported to most likely to be identical by descent
rather than multiple mutation events occurring at the same site in
another study.
Familial AA Amyloidosis: Systemic amyloidosis is an inherited
disorder leading to amyloid deposition in various organs and
tissues, including liver and kidney. The liver is commonly the
significant organ involved in Siamese cats (compare with
amyloidosis in Abyssinians where significant signs are mostly
renal). Cats 1-5 years of age are typically affected. Considered to
be familial, Siamese cats account for ~95% of reported cases of AA
amyloidosis. Spontaneous hepatic rupture associated with hepatic
amyloid deposition can occur.
In a case report, two cats from one cattery with amyloidosis were
described. This condition led to spontaneous liver hemorrhage
in one cat, and chronic renal failure in another, so signs vary
depending on which organ is most affected.
In one report (1987-1994), 6.2% of Siamese/Oriental cats presented
for post mortem were affected by generalized AA amyloidosis. The
amyloid fibril protein (AA) amino acid sequence is different than
that found in the Abyssinian form of this condition. Clinical signs
of amyloidosis include anorexia, vomiting, stomatitis, anemia,
emaciation, painful distended abdomen and diarrhea. Post mortem
changes may include pale friable engorged liver and spleen, and
dilation of intestines. A few cases in the retrospective study were
found to have had concurrent FIP, and a few had recently gone
through parturition.
In a study of cats (1983-1987) in the Netherlands, 1.5% of 710
Siamese referrals were diagnosed with AA-amyloidosis. In 36% of
the Siamese cats with amyloidosis, inflammatory conditions were
present (rhinitis, FIP).
The apolipoprotein, apo-serum amyloid A (AA) amyloidosis
propensity is still not certainly a solely genetically problem. Recent
sequencing of the proteins shows mutations in amino acids related
to a particular breed present in other breeds, and this may mean
that in addition to the presence of amyloid-associated genes, other
factors such as chronic inflammation or certain infections are
involved in the genesis of phenotypic clinical amyloidosis. At least
three genes or gene clusters may be responsible for the trait.
Mucopolysaccharidosis Type VI (MPS VI): This is an autosomal
recessive lysosomal storage disease resulting from deficiency of
the enzyme N-acetyl-galactosamine-4-sulfatase (aryl sulfatase
B) leading to the accumulation of the glucosaminoglycan (GAG),
dermatan sulfate. The central nervous system appears to be spared
in this condition even when expressed in its most severe form. The
skeletal system is the primary target. A test has identified a mutation
(label: L476P) leading to the condition. Note that in the past, the
Berry urinary spot test (toluidine blue) was used as a screening test
to identify excess GAGs in the urine, and remains useful.
Three distinct phenotypes from two separate distinct mutations
(L476P, D520N) were reported in a study. The L476P homozygote
cats have coarse facial features (broad face, short nose, small ears),
dwarfism, degenerative joint disease (DJD), widespread leukocyte
and other cellular lysosomal inclusions, and dermatan sulfaturia.
The two other genotypes (D520N homozygous, and L476P/D520N)
have normal growth and appearance but internal changes. The
L476P/D520N is the mildest in expression. Skeletal disorders such
as DJD are primary endpoints of the MPS VI trait.
In a screening study of three continents, the mutation D520N was
found in 11.4% of the open Siamese cat population from 5 of 6
countries. It was concluded that the genotypes D520N/D520N and
D520N/L476P are likely widely distributed in the general population.
These cats will be normal except for an increase in DJD, particularly
at the caudal aspect of the proximal humeral epiphysis, and mild
changes in the femorotibial joints may also occur. Radiographic
hallmarks of the condition include: generalized osteopenia, severe
vertebral epiphyseal dysplasia, coarse trabeculae and irregular
subchondral bone development. Facial dysmorphia and stunted
growth are evident starting at about 8 weeks of age in severe
genotype kittens. Hind limb paresis or paralysis may develop due
to compression of the spinal cord. A stiff gait and reduced activity
may be noted. Mild basophilic granulation in neutrophils routinely
prepared for blood films can be useful as a screening test. Definitive
diagnosis requires specialized testing available at the University of
Pennsylvania, or one can run the urine dermatan sulfate test.18
In North America, at least seven families have produced clinical
cases of MPS VI. Presence of atypical DJD or other skeletal disease
in Siamese should place MPS VI on the differential list.
This trait can affect the eyes also. Corneal opacification occurs;
frosted appearance of the eyes may be noted by 11 weeks of age,
progressing until one year of age; marked pathology occurs in the
RPE, but is not visualized clinically.
In man this disease is termed Maroteaux-Lamy Syndrome.
Progressive Retinal Atrophy (rdAc): Autosomal recessive genetic
disease causing blindness. Found at a gene frequency of 33% in the
breed. See under Abyssinian. A genetic test is available.
Disease Predispositions
Wool Sucking: Onset is usually after weaning, also affects Siamese
crosses. Target is commonly a blanket, or knitted clothing. Compulsive
behavior often ends at sexual maturity, but some cases may have late
onset or continue signs late into life. A study found 55% of fabric
eating cats were Siamese in a group of 152 affected cats. Behavior
is characterized by compulsive stereotypic oral movement. Though
many cats begin with substrate of wool, many add other types of
fabric, and even non-fabric substrates (plastics). Early weaned cats are
over-represented but there is no clear causal relationship.
Separation Anxiety Syndrome: Of a study group of 136 cats with
SAS symptoms, Siamese accounted for 6 % of the cats. In this
breed, most commonly the females defecated, and males expressed
excessive vocalization.
Floppy Pinnae: With a middle adulthood age of onset, normal
ears become floppy ears (just the upper portion of the pinna).
This condition can resolve without treatment.22 One theory is that
flopping is due to relapsing polychondritis, which requires a biopsy
for diagnosis.
Corneal Sequestration (Synonym: Black body or cornea
nigrum): Siamese cats are over-represented. Usually in central
or paracentral cornea; brown to black pigmented lesion; often
surrounded by a loose collarette of poorly adherent corneal
epithelium. Stromal necrosis may extend into shallow or deep
stroma, or even to Descemet's membrane. Sloughing and corneal
healing may take 2-6 months; surgical debridement is another
option. Material may be tear concretion mixed with stroma and
inflammatory cells.
Progressive Retinal Atrophy (PRA): A breed predilection for diffuse
bilateral PRA was reported. First changes include attenuation of
retinal blood vessels, retinal thinning in the area centralis (tapetal
glow), then generalized tapetal hyperreflectivity, and progressing to
ghosted or absent dorsal vessels with attenuated optic disc. Vision
loss occurs late in the process and night vision is retained. Client
complaints include the cat bumping into things, reluctance to jump,
and mydriasis.
Open Angle Glaucoma: A chronic primary glaucoma that may
have Siamese breed predilection. Affected cats gradually progress in
severity of clinical signs, and may develop luxation of lens.
Hyperthyroidism: Reduced risk for this breed was reported.
Siamese cats were almost 10x less likely to develop hyperthyroidism
(Odds Ratio 9.6) than non-Siamese.
Pancreatitis: In a retrospective case study (40 cases) Siamese cats
were overrepresented (15% of the cases). Necrosis and suppurative
inflammation were two distinct forms. Hypokalemia occurred in
about half of the cats, and normal lipase and amylase were found. In
a previous report, 39% of pancreatitis cases were Siamese breed.
Dsytocia: A survey of 2,928 litters (multiple cat breeds) was carried
out to ascertain prevalence of dystocia, and an over-representation
of Siamese cats was found. A total of 571 Siamese litters were
analyzed. The average rate in a mixed breed colony for dystocia was
0.4% of litters. A rate of 10% was found in Siamese cats.
Cervical Neck Lesions: Increased risk was reported in a survey where
Siamese were one of two breeds (the other being Abyssinian) most
commonly affected by Feline Odontoclastic Resorptive Lesions.
Gingivitis and Periodontal Disease: Anecdotal evidence of
increased prevalence.
Slipped Capital Femoral Epiphysis: Siamese breed cats were 23%
of affected cats (3/13) in a survey, though they made up only 5%
of the population (of 13,250). Average body weight in the pooled
study group was 5.6 kg, significantly over the normal average for
cats. A physeal dysplasia was characterized by diffusely widened
physis with disorganized cartilage. Though this condition is typically
associated with trauma in dogs, in this set of cases there was no
history of any trauma. It is likely the growth plate cannot handle
normal shear stresses due to the dysplasia. This condition affected
cats 4.5-24 months of age. A genetic etiology is suspected. Insulin
levels or insulin receptor resistance in obesity was proposed to play
a role in physeal dysplasia.
Medial Patellar Luxation (MPL): A study reported that of 12
Siamese cats assessed as part of a larger study, five had abnormal
patella seating with easily induced luxation. Compared with the rate
of affected cats in non-pedigreed (2/31), Siamese had an increased
MPL prevalence in this particular study.
Hip Dysplasia (HD) may be associated with luxating patellas.
In another report, Siamese cats had a frequency of 7.1% hip
dysplasia.
Adenocarcinoma (small intestine): Breed associated risk
was reported to be eight times that for other cat breeds.
In a population where 7.8% of cats in the group were of
Siamese breed, 71% of the cases were diagnosed in Siamese
cats.36 In 100 previously published cases 42% were Siamese
breed. In retrospective case study at MSU (1975-1985) for GI
adenocarcinoma in cats, 6/11 cases were Siamese. In this report
tubular adenocarcinoma case survival time was an average of 11
months, while mucinous and undifferentiated type had average
survival times of 4 months. Overall, a survival time of 5 months
with metastasis, and 10 months for patients without metastases
was the reported average.
Lymphosarcoma (LSA): In a retrospective case study of 7,159
admissions over a decade, 60 cats had LSA; Siamese cats were
predisposed. Young Siamese and Orientals when pooled accounted
for 33.3% of LSA cases, though they made up only 2% of the
hospital population. Mediastinal LSA (thymus, mediastinal lymph
nodes) was most common in Siamese cats, and 86% of mediastinal
cases were diagnosed in Siamese, with mean age 2 years. All
were FeLV negative. Breed lines diagnosed with early onset LSA
had origins in Europe and Australia.50 A recent report describes
analysis of two families that supports the hypothesis that this is an
autosomal recessive trait, and homozygous in affected patients.
Feline Dilated Cardiomyopathy (DCM): Siamese cats may be
predisposed. Incidence has dropped since dietary supplementation
with taurine began, but cases still occur. Average age of onset is 7
years. Previously, mortality for DCM was ~85%, but with taurine
supplementation the mortality is in ~30%-50% range. Feline
clinical signs are not typically a cough as in the dog; heart rate
may range from bradycardia to tachycardia. Systolic heart murmur
or diastolic gallop can often be heard, and 61% have arrhythmias,
usually ventricular. Echocardiography is the best modality for
definitive diagnosis.
Renal Failure: Rate for Siamese was identified to be more than
double baseline in a study (1980-1990, 189,371 cases. Purdue
Veterinary Medical Database) at an odds ratio for risk of 2.6:1, with
prevalence of 2.8%.
Lower Urinary Tract Disease: Higher than expected rates of cystine
urolithiasis reported in a small study group (3/18 were Siamese).54
Oxalate uroliths have been reported to be the most common type
of stones in Siamese cats (especially males), and urate and cystine
stones also more common than expected.
Myasthenia Gravis: The congenital form seen in the breed is not
associated with antibodies against the acetylcholine receptor (as in
Abyssinian and Somali cats). Same symptoms as the acquired form
are seen.
Feline Bronchial Asthma: (Synonyms: allergic bronchitis, chronic
bronchitis, feline lower airway disease). Siamese breed cats are
overrepresented-in a retrospective study, of 22 cats with lower
airway disease, Siamese made up 55% of afflicted cats. Cough was
seen in most but not all cats. Radiographs were normal in 23%
of affected cats. These authors summarize earlier findings that
indicate Siamese and Himalayan cats are at higher risk, perhaps
due to genetic susceptibility. Siamese may have a more prolonged
clinical course, and a relapsing tendency.
Rare and Isolated Reports
Sphingomyelinosis: (Feline Neimann-Pick Disease): An
autosomal recessive polyneuropathy resulting from the reduction
of the enzyme sphingomyelinase. This results in a storage disease
characterized by accumulation of cholesterol, gangliosides and
sphingomyelin. Head and fine generalized tremors, stunted
growth, progressive lower motor neuron tetraparesis, hypermetria
and ataxia begin at about 8-20 weeks of age. Signs are slowly
progressive over months. Anisocoria and blindness are usually
present by 5 months of age. Head tremors lead to dysphagia. Late
stage signs include plantigrade/palmigrade stance, weakness, and
hepatosplenomegaly. Onset of polyneuropathy is usually before
1 year of age.20 Diagnosis is by nerve biopsy, lysosomal enzyme
and lipid testing in skin, liver and or brain tissue, and EMG (slow
conduction velocity).
Congenital Hydrocephalus: A genetic basis for Siamese cats
with this trait was proposed. The hydrocephalus leads to dilated
ventricles, with resulting pressure necrosis of the nervous tissue
surrounding them. Clinically, domed skulls, lateral strabismus
(setting sun sign), vision defects, and spastic gait problems result.
Aggression, dullness, circling, and seizures may also be seen.
Neuroaxonal Dystrophy: A degenerative neurologic condition
in two littermates has been described. The condition resulted in
swollen distal ends/pre-terminal segments of the axons in the
central nervous system. This is an autosomal recessive condition.
Ataxia starts at about 2 weeks of age; head tremor occurs first,
then hypermetria and rear limb paralysis. In these 2 kittens, coat
pigmentation was normal.
Hypomyelination of the Central Nervous System (Congenital
Tremors): Two littermates were reported to be affected by early onset
tremors, seizures and ataxia. A third kitten died at three days of age.
By four weeks of age, the surviving littermates had tremors with
frenzied biting episodes when active; normal at rest. Peripheral myelin
was normal, while CNS myelin was abnormal/reduced. The unusual
frenzied biting behavior has not been reported in other species with
this condition and is thought to be associated with paresthesia
secondary to inappropriate responses of hypo-myelinated nerves.
Inherited Hyperchylomicronemia: Presenting signs include
weakness, loss of appetite and severe anemia by 4 weeks of age.
This defect in lipoprotein lipase enzyme activation was seen in two
related litters. The clinically normal parents and related kittens had
reduced enzyme activity also. This is suspected to be an autosomal
recessive inheritance.
Fasting hyperchylomicronemia, hypertriglyceridemia, lipemia
retinalis, splenomegaly, and xanthomata of skin, and liver and
kidney, and sometimes anemia are also described. Xanthomata (fat
granulomas) in the vicinity of the nerves lead to nerve compression
and subsequent dysfunction such as rear limb paresis (with
plantigrade stance) and cranial nerve dysfunction. If the levels of
lipid and lipoproteins are high, the blood may take on the gross
appearance of cream of tomato soup.
A transient hyperlipidemia and anemia was described in three
litters of Siamese kittens. Severe hypertriglyceridemia and anemia
were noted around the time of weaning, and 3 of 4 siblings and 1
of 5 half siblings from the litters were affected. Marked elevation
of chylomicrons and VLDL were identified. Anorexia, ataxia, and
lethargy were predominant clinical signs.
Hemophilia B (Christmas Disease, Factor IX Deficiency):
A sex-linked recessive hemorrhagic disorder with resulting
hemarthrosis, excessive post-surgical hemorrhage, gingival
hemorrhage and spontaneous hematoma formation. Females are
asymptomatic carriers, males are affected.
GM1-Gangliosidosis: A beta-galactosidase deficiency. Recent
studies show the same mutation is responsible for this condition in
both Korat and Siamese cats.
Ceroid Lipofuscinosis: This is a lysosomal storage disease, with
lipofuscin accumulation. Signs may include seizures and weakness.
An autosomal recessive inheritance has been postulated.
Copper Storage Disease: Peri-acinar (centrilobular) copper
accumulation in liver of cats has been reported (as in Bedlington
terriers). In one affected cat, at post mortem at 2 years of age,
granules were found to have accumulated in proximal convoluted
tubules/collecting ducts of kidney and in the macrophages/alveolar
epithelium of the lung as well.
Merosin (laminin О±-2) Deficient Myopathy/Muscular
Dystrophy: Mode of inheritance of laminin О±-2 deficiency
is unknown. Rear limb weakness begins at 6 months of age,
progressively worsening atrophy and contracture occurs by one
year old; those in the report were euthanized before reaching 24
months of age.
Porphyria: Porphyrin (porphobilinogen) accumulates in bones,
teeth, urine making them stain brown, and fluoresce. In regular
light, urine appears brown.16 Affected cats may be sensitive to
sunlight; porphyria is not usually life threatening. Refractile
bodies occur in erythrocytes; may also develop hemolytic anemia.
Concurrent nephropathy (tubular ischemia, mesangial proliferation)
occurred.31 Due to deficiency of uroporphyrinogen III synthetase,
porphobilinogen deaminase. An autosomal dominant pattern of
inheritance is reported.
Endocardial Fibroelastosis: An elastic thickening extending diffusely
through the endocardium. Left atrium and left ventricle affected,
reported age of onset in early postnatal period, or alternatively,
middle age in Siamese cats. This is a very rare condition. Genetic
basis was suggested.
Persistent Atrial Standstill: Siamese may have a breed
predisposition to this rare problem. Bradycardia is poorly
responsive to medical management; a pacemaker may be needed.
Cutaneous Mastocytoma: Locally recurring, usually in younger
Siamese cats; this presentation is a rare subtype of cutaneous
mastocytoma. Usually multiple nodules (> 5) in deep dermis and
subcutis; histiocytic-like cells, noted to cluster in household in
siblings, mostly on head; a genetic predisposition possible. These
have low metastatic potential.
Vitiligo: Symmetrical pigment loss on the footpads, nose and
eyelids. May be immune mediated (melanocyte surface marker
antibodies found).
Feline Hyperesthesia Syndrome: (Synonyms: rolling skin disease;
psychomotor epilepsy.
Junctional Epidermolysis bullosa: A recessive condition with
skin blisters where the weak collagen breaks down. It is first seen
pre-weaning and may result in claw loss.
Other conditions reported in the breed include:
Psychogenic Alopecia, Malignant Mammary Tumors (early onset
tendency), Food Hypersensitivity, Familial Cleft Palate, Congenital
Portosystemic Shunts (usually extrahepatic), Insulinoma, PTH tumors,
hydrocephalus, congenital deafness, pyloric stenosis, intestinal
polyps, hemophilia B, mycobacterium avium-intracellulare complex
(MAC), hereditary porphyria, kinked tails, mast cell tumors, congenital
peripheral vestibular disease, juvenile ataxia, aortic stenosis.
Genetic Tests
Mucopolysaccharidosis Type VI
Josephine Deubler Genetic Testing Laboratory (PennGen). At the
University of Pennsylvania veterinary hospital.
Minimum of 1-2 ml EDTA blood processed within 48 hours-express
mail service in padded mailer adequate. Is not necessary to cool;
avoid freezing. Test request form available online. Can do concurrent
blood typing. Can submit a pair of buccal swabs for testing. http://
research.vet.upenn.edu/SubmitaSample/tabid/554/Default.aspx
UC Davis Feline Genome Project (Dr. Lesley Lyons) Submit buccal
swabs for research on possible autosomal recessive inheritance for
lymphoma. http://www.vetmed.ucdavis.edu/Catgenetics/Feline_
Research_Projects.html
Older cats should be screened for renal function using serum
creatinine and urinalysis (as a minimum) in cats 8 years and older
since there is a breed propensity for renal failure.
Direct genetic test for rdAc-PRA is available from UC-Davis VGL.
Miscellaneous
- Breed name synonyms: Temple cat of Siam, Royal cat of Siam,
Thai cat, Meeser, Meesy
- Registries: FIFe (Siamese), TICA (Siamese), CFA, ACFA (Siamese),
CFF (Siamese), GCCF (includes Balinese as Longhaired Siamese),
ACF, WCF (with Oriental Shorthair), NZCF (Siamese), CCA (Siamese)
- Breed resources: National Siamese Cat Club:
http://nationalsiamese.com
Seal Point Siamese Cat Club (GCCF):
http://sealpointsiamesecatclub.org/
The information contained on our website is for informational purposes only. All the material was collected from the most reliable sources of information. Any reproduction or publication of information from our website without permission - is prohibited
For any questions please write to:
[email protected]
Copyright © 2016-2017 Animalia Life | All rights reserved