Cats cannot taste sweet foods

Behavioral biologists have published a paper in Proceedings of the National Academy of Sciences, where he puts forward his theory that cats have no real way to distinguishing sweet tastes. This, they reason, is because they lack sweet receptors. The researchers speculate that the lack of the 'sweet taste' is more common in mammals that those that can distinguish sweet tastes. The paper reference is: P. Jiang et al., “Major taste loss in carnivorous mammals,” PNAS, doi/10.1073/pnas.1118360109, 2012.