Debunking Common Myths About Siberian Cat Allergens
Many breeders of Siberians—and other breeds like Sphynx, Cornish Rex, Devon Rex, Ragdoll, and Bengal—have circulated misleading information about allergen levels. Below are some of the most common myths, along with what research actually shows.
Myth 1: All Siberians are hypoallergenic.
Extensive research, including over 300 samples of Siberian saliva and fur, shows that only about half of Siberians produce allergen levels lower than typical domestic cats. Some Siberians have exceptionally low levels, making them suitable for homes with severe allergies, while others test very high and can trigger strong reactions.
Myth 2: Siberians produce no Fel d 1 allergen.
Every Siberian tested to date produces some amount of Fel d 1, the primary feline allergen. Some produce very small amounts, while others produce more. Evidence suggests Fel d 1 plays a role in early kitten development. Siberians show a wide range of Fel d 1 levels—much wider than in most breeds.
Myth 3: Siberians produce a “different” type of Fel d 1.
Scientific testing shows that Siberian Fel d 1 is structurally and chemically identical to the allergen in other cats. There is no evidence to support the claim that their allergen is “different” or less reactive due to its composition.
Myth 4: Male cats always produce higher allergen levels than females.
Studies across ten Siberian catteries show that low-allergen males test very similar to low-allergen females. Interestingly, some low-allergen males cause fewer reactions in visitors than breeding queens. When allergen levels are “normal,” intact males do tend to test higher than females, but levels drop significantly once neutered.
Myth 5: Fur tests are always accurate.
While fur testing is convenient, it’s less reliable, especially in queens. During late pregnancy and nursing, queens often have much higher allergen levels in their coats, sometimes causing reactions even if they normally test low. Intact males may also test higher during the breeding season (March–October).
Myth 6: Saliva tests are 100% accurate.
Saliva testing is generally more accurate than fur sampling but not infallible.
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Cats stressed during testing may show higher than normal levels.
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Cats that salivate excessively may show artificially low levels.
For this reason, repeat testing is recommended when results are critical. Research shows saliva testing to be about 80% accurate.
Myth 7: All kittens from low-allergen parents will produce less allergen.
Breeding studies across multiple catteries found consistent patterns:
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Two normal-allergen parents: Most kittens are high allergen.
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One low-allergen parent: Roughly half the kittens will be low to medium allergen.
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Two low-allergen parents: Most kittens are low allergen, but a few may still test high.
Siberians have a unique potential for low-allergen cats, but not every Siberian is hypoallergenic. Testing is essential, especially for families with severe allergies. At NoCo Siberians, we prioritize transparency and offer fur samples to help allergy sufferers determine their compatibility before bringing home a kitten.