The cat's brain is shrinking. Free Technical Library News

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The cat's brain shrinks

27.01.2022

Scientists at the University of Vienna (Austria) and the National Museum of Scotland have found that the brain size of domestic cats is smaller than that of their African ancestors.

It is known that the domestication of animals by humans leads to a decrease in the brain, which is observed in dogs, sheep and rabbits. In the new study, researchers measured the skull volume of a large number of domestic cat breeds to come up with an average. The same has been done with wild African cats, which are the ancestors of today's Felis domestica.

The results confirmed that the brains of domestic cats are much smaller than those of their ancestors. To show that the decrease in brain size is due to domestication, the researchers compared the volume of the skull in European wild cats and their hybrids with domestic cats. In hybrids, the sizes occupied intermediate values between wild and domestic species.

Previous research has shown that the reason for the decrease in brain size in domestic animals is due to a decrease in the number of neural crest cells that are involved in responding to danger, since domesticated animals face much fewer threats than those living in the wild.

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