Cats are unable to taste anything that is what?

Cats are unable to taste anything that is sweet. Unlike humans, cats lack a functional version of the Tas1r2 gene, which helps produce one half of the receptor responsible for detecting sweetness. Without that receptor pair, sugar does not register as sweet to a cat in the usual mammalian sense.

Cats can still detect other taste signals, including bitter, sour, salty, and savory flavors associated with amino acids. Their taste system is especially suited to their biology as obligate carnivores, whose natural diet is rich in protein and low in sugary plant foods.

A common misconception is that a cat eating ice cream, cake, or another sugary food must enjoy its sweetness. Cats may be attracted to the fat, milk proteins, aroma, or texture instead. They also have far fewer taste buds than humans—roughly 470 compared with thousands on a human tongue. This does not make their sense of taste useless; it makes it specialized for meat-based foods.