Alexis Noel has done something many of us will never do — scrape spit off of frog tongues — of 15 frogs to be exact. "It was pretty disgusting," Noel, a Ph.D. student at Georgia Tech ...

That long tongue is covered with thousands of mucus glands, which secrete some of the stickiest spit on Earth. In fact, when researchers studied horned frog saliva in 2014, they found these frogs ...