Snot. Vomit. Spit. Poop. Everyone knows these are gross, right? Well, for some animals, they're crucial ingredients for survival! This book describes more than 30 of these animals - the grossest of the gross - and explores how their habits, as revolting as they might be, help them thrive. From dung beetles who live for feces, to hagfish who cover themselves in gooey slime to ward off predators, to bullfrogs who can puke up their entire stomachs for cleaning purposes, these animals have novel adaptations that work well for them. It's all so icky. And so awfully interesting!