Crocodiles

Crocodiles are an extremely interesting kind of semi-aquatic predators. These animals belong to the order of aquatic vertebrates and have received the status of the largest individuals of the reptile species. Historically, crocodiles are considered ancient descendants of dinosaurs, since this species is more than 250 million years old. By right, this species is unique, since for such a huge period of existence, its appearance has practically not changed.