Tonkinese: the natural Siamese-Burmese cross with aquamarine eyes

In the late 1950s, Canadian breeder Margaret Conroy began crossing Siamese with sable Burmese, hoping for a cat that combined the elegance of the first with the sturdiness of the second. The offspring showed an unexpected intermediate phenotype: an even coat with subtle shading on the points (neither fully colorpoint nor fully solid), striking aquamarine eyes (a color halfway between Siamese blue and Burmese gold), and a personality that married the Siamese voice with Burmese friendliness.

The breed stabilized through the 1960s and earned CFA recognition in 1979 under the name Tonkinese, with TICA acceptance following. The name nods to the Gulf of Tonkin in Southeast Asia, a tribute to the shared geographic roots of its two founding breeds.

Today it ranks among the best balanced cats in the fancy for temperament and health, thanks to a hybrid genetic base that lowers the prevalence of inherited disease compared with either parent breed on its own.

What coat pattern does the Tonkinese have?

The Tonkinese carries a signature mink pattern that sits genetically between two extremes:

• Pointed (colorpoint, inherited from the Siamese): pale body, heavily pigmented points
• Sepia or solid (inherited from the Burmese): uniform body color

The mink pattern is the result of inheriting one copy of each parental gene (a heterozygous combination). The body shows a medium tone, with shading on the points that's light but clearly visible. It's neither fully solid nor fully pointed.

The accepted colors:

• Natural mink (chocolate base)
• Champagne mink (lighter)
• Blue mink
• Platinum mink

Crosses within the breed can also produce pointed (more Siamese) or solid (more Burmese) kittens, accepted by some registries but less typical.

The aquamarine eyes are the breed's calling card: a color midway between deep Siamese blue and Burmese gold. They're unique to the Tonkinese and appear in neither founding breed.

What is the Tonkinese personality like?

It inherits the best of both founders:

Burmese sociability. It greets visitors, seeks out human contact, and bonds closely with the family. It is neither distant nor reserved.

Siamese voice, dialed down. It's vocal and communicative, but less extreme than a pure Siamese. It chats with the family and keeps up a steady commentary without being exhausting.

Sustained high energy. It plays, jumps, and chases. It shares the curiosity and intelligence of the Burmese and the drive of the Siamese.

Intense attachment to people. It does not tolerate long stretches of solitude. It gets stressed when left alone too many hours.

It's a great match for people who work from home, families with steady human presence, and multi-cat households. It's a poor match for owners gone nine or ten hours a day with no second cat in the house.

What hereditary health issues does the Tonkinese have?

Because of its hybrid base, the health profile is relatively cleaner than that of a purebred Siamese or Burmese. Documented conditions include:

Hypertrophic cardiomyopathy (HCM). Present at moderate prevalence. Echocardiography is recommended for breeding cats.

Renal and hepatic amyloidosis. Inherited mainly from the Siamese side. More common in lines carrying a higher proportion of Siamese ancestry.

Diabetes mellitus. A predisposition inherited from the Burmese, especially in lines tracing to Australian stock. Careful nutrition from a young age prevents most cases.

Feline asthma. Documented at above-average prevalence.

Average life expectancy runs 14 to 18 years with appropriate care.

How much grooming does it need?

Minimal. The coat is short, fine, and satiny.

• Weekly brushing with a rubber grooming mitt.
• No bathing except in an emergency.
• Standard dental care.

How much should a Tonkinese eat?

A healthy 9 lb (4 kg) adult needs about 1.5 to 2.3 oz (45-65 g) of premium dry food per day. Because of the diabetes predisposition inherited from the Burmese:

1. Low-carbohydrate food (ideally under 15% on a dry-matter basis) and high in protein (40-50%).
2. Wet food as a base or supplement.
3. Monthly weight checks.

Does it adapt to apartment life?

Yes, with human presence and enrichment. It needs:

• Company: a person around for much of the day, or a second cat.
• Vertical space.
• Daily play, 30 to 45 minutes.

How much does a Tonkinese cost in the United States?

A kitten with pedigree from a CFA- or TICA-registered breeder runs between $1,200 and $2,500 in 2026. Show lines with championship parents can reach higher. As with any breed, avoid private sales without documentation: the apparent savings often hide untested lines and undocumented crosses.

If a pedigreed kitten is out of reach, breed-specific rescues and general shelters periodically have Tonkinese and Tonkinese mixes available for an adoption fee, typically well under $200.

Does it get along with other animals?

Yes, especially with other sociable cats. It tolerates living with calm dogs and older children.

Tonkinese data sheet

Identification

• Size: medium, muscular
• Weight: 7-12 lb males / 6-10 lb females
• Life expectancy: 14-18 years
• Origin: Canada (1950s-1960s)

Physical

• Coat: short, fine, satiny, mink pattern
• Colors: natural mink, champagne mink, blue mink, platinum mink
• Eyes: aquamarine (the breed's signature)
• Body: muscular, slim

Temperament

• Sociability: very high
• Independence: low
• Vocalization: moderate to high, conversational
• Trainability: high

Frequently asked questions

Is it the same as a Siamese or a Burmese? No. It's a breed in its own right, derived from both. Intermediate temperament, its own mink pattern, and unique aquamarine eyes.

Is it vocal? Yes. It inherits the Siamese voice but at a moderate volume. It chats with its family.

Does it get along with dogs? Yes, especially calm ones.

How long does it live? 14 to 18 years on average.

Does it shed a lot? Very little.

Bibliography

• The Cat Fanciers' Association (CFA), Official Breed Standard: Tonkinese. https://cfa.org
• The International Cat Association (TICA), Tonkinese standard and registry. https://tica.org
• American Veterinary Medical Association, clinical resources on feline diabetes mellitus. https://avma.org
• Royal Veterinary College, VetCompass studies on hereditary disease prevalence in cat breeds.
• International Society of Feline Medicine, clinical guidelines on feline asthma and cardiomyopathy.