Unlike other mammals, cats lack the proper genetic coding to experience sweet tastes. Cats have a mutant chemoreceptor in their taste buds that prevents them from tasting sweet things. It is actually a trait shared by all cats big and small, not just domestic ones.

In 2005, scientists from the Monell Chemical Senses Center, in Philadelphia, Pennsylvania, clearly discovered that a genetic deficiency deletes the sugar detectors on the taste buds of a cat. In other words, cats do not possess the genetic “hardware” needed to taste sweets.

Consequently, scientists found that cats are alone among mammals in lacking the sweet gene. Even among meat-eaters like hyenas and mongooses who are close relatives of cats, these animals also have the sweet gene like human beings.

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