No preference is so quick to form, and none so hard to lose, as a baby’s love for sweets. Give a newborn a drop of sugar water when he’s hours old, and he’ll suckle…Some mammals have lost the capacity for sensing either sweet or savory: In 2012, a team led by Peihua Jiang of the Monell Chemical Senses Center in Philadelphia found this to be the case among marine mammals like Asian otters, bottlenose dolphins and sea lions – species that tend not to chew their food. "It kind of makes sense," says Paul Breslin, another taste physiologist based at Monell and Rutgers University. "If it looks like a fish and swims like a fish, and it’s hard to catch, they’ll swallow it whole. So they don’t need to taste."
/ / / Do Animals Have a Sweet Tooth?