Why dolphins, cats, and other carnivores can't taste sweets

Most mammals — humans included — have taste receptors that can detect sweet, salty, sour, bitter and savory flavors; but the bottlenose dolphin pictured above has lost its ability to detect sugars. In fact, newly published research reveals that the dolphin is just one of many carnivores that has lost its ability to… » 3/13/12 7:25am 3/13/12 7:25am