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Why Cats Lack A Sweet Tooth: New American Chemical Society Video

Do purrr-ferrr sardines or sweets? The (ACS), the world’s largest scientific society, has released a new Bytesize Science video that explains why , unlike humans and other mammals, are indifferent to sweet flavors.

The video was filmed at the , an institute dedicated to research on taste and smell. Prior to becoming Monell’s Director, , Ph.D., studied the genes of cats in the late 1970s. At the Philadelphia Zoo, he gave lions, tigers, cheetahs and housecats two different types of water – sugar water and regular water. The cats showed no preference to the sugar water, suggesting a physiological difference between other mammals, such as humans, monkeys and dogs.

The video explains how scientists from the Monell Chemical Senses Center later uncovered the cause behind the cat’s missing sweet tooth. In place of a functional sweet taste receptor gene, they discovered that cats have a pseudogene, or a broken gene, that makes them unable to detect sweet tastes.

Produced by the ACS Office of Public Affairs, the video is also available at www.BytesizeScience.com.


American Chemical Society