The crocodile is an animal with a very long history of existence. It was an animal that coexisted with dinosaurs more than 200 million years ago. Dinosaurs are now extinct, despite the existence of crocodiles, and there are more species in existence. In terms of category, crocodiles are animals in the phylum Chordata, Reptilia and Crocodilia, so they belong to vertebrates and reptiles in this respect. As a vertebrate, crocodiles are characterized by a backbone. As a reptile, crocodiles also conform to many characteristics of reptiles. For example, crocodiles have scales covering the surface of their bodies; For example, crocodiles use crawling movement, crawling forward; Also, crocodiles use lungs to breathe, and their body temperature is not constant, belonging to poikilotherms.
In addition to classifying crocodiles by category, crocodiles can be classified in other ways. For example, from the point of view of feeding habits, crocodiles belong to carnivores, they can eat both aquatic animals and terrestrial animals, and they are a very ferocious carnivore. For example, from the point of view of reproductive mode, crocodiles use oviparous reproductive mode, which is an oviparous animal.
Crocodiles will bleed, their blood is deep red. After they are injured, their bodies bleed. Sometimes they are injured while hunting, sometimes they are injured when their own kind fight with each other, and sometimes they are injured when humans kill them. In any of these cases, the crocodile may bleed.
