Research overview: bitter taste receptors in the domestic cat

Cats retain the ability to taste bitter compounds, supported by a family of bitter taste receptor genes. This overview surveys what is known about the feline bitter receptor repertoire and its likely role in detecting potentially toxic or unpalatable substances. Bitter perception is generally thought to protect animals from ingesting harmful chemicals, which would remain valuable even for a carnivore. The survey relates the cat's bitter receptors to the broader pattern of taste-gene retention and loss across carnivores and to questions about why cats keep bitter sensitivity while losing sweet. It discusses how bitter taste influences the acceptance or rejection of foods and medications, a practical concern in administering pills to cats. Understanding the bitter receptor repertoire shows that feline taste is selectively preserved where it remains useful. It frames bitter perception as a protective sense, complementing the picture of a taste system shaped by the demands and dangers of a carnivorous diet.