Six calls produced by a juvenile C. johnstoni in grave danger of being eaten by a predator. Baby crocodiles and alligators have a hard life at first. Until they grow large enough to defend themselves with powerful jaws and sharp teeth, they re just a bite-sized meal for a variety of different predators. Big lizards, mammals, birds and even large frogs and fish can eat baby crocodiles. An American alligator hissing by exhaling, then inhaling, then exhaling forcefully while striking out with its jaws, and finally inhaling again.
Crocodiles employ the favorite reptilian trick of hissing loudly and opening the jaws.
This shows off the pearly white teeth and the striking yellow tongue as a warning. If that doesn t work, the crocodile will lash out with its jaws in an attempt to bite. A single bellow from an adult Chinese alligator, out of a sequence of three consecutive calls. First, however, the animal has to find a compatible mate. Crocodiles and alligators employ a full repertoire of visual, chemical and acoustic displays in order to impress their mates.