Nile crocodile (crocodylus niloticus) shire river, malawi, close-up of head.

horizontals animals croc developing countries crocodilia mouth aquatic malawian reptile dangerous ectothermic teeth nile close amphibia fauna coldblooded reptilia wildlife cold predator amphibian shire crocodylus amphibious crocodiles crocodile hungry crocodilian developing country river horizontal africa niloticus reptiles vertebrate ectotherms predatory amphibians head tropical carnivorous nature malawi zoology ectotherm carnivore carnivora carnivores vertebrates blooded crocodylidae african crocodile third world animal