Crocodiles are just like Alligators but one thing, Crocodiles are bigger than Alligators. Crocodile babies hatch from soft leathery like eggs, if the temperature is between 88 or 90 degrees, then it is a male, if it is lower or higher, then it is a female. After the babies hatch they start calling their mother, when she is there she will pick them up in her mouth! Crocodiles have 14 other species. Crocodiles are also excellent swimmers.