Other animals demonstrate olfactory camouflage, hiding from prey by “covering up” their smell or masking themselves in another species’ smell. The California ground squirrel, for instance, chews up and spits out rattlesnake skin, then applies the paste to its tail. The ground squirrel smells somewhat like its main predator. The rattlesnake, which senses by smell and body heat, is confused and hesitant about attacking another venomous snake.