Amphibians

Birds

Birds are warm-blooded vertebrates that lay eggs. Birds are also winged and bipedal. There are well over 10,000 different species of birds and they inhabit almost all ecosystems and can different significantly from one another, with for example size, finch versus an ostrich.

Cnidaria

Fish

Fish are cold-blooded aquatic vertebrates, with a scale covering, gills for life and paired fins for motility, as well as a streamlined body for rapid movement. Fish belong to the kingdom Animalia.

Mammals

Mammals are vertebrate animals consisting of hair, sweat glands, mammary glands, a brain with a neocortex, and giving birth to live young, with the except of a couple of species which lay eggs. Mammals are warm-blooded.

Reptiles

Reptiles are cold-blooded amniotes. Reptiles are covered by scutes or scales and they are tetrapods and lay eggs. There are four orders of reptiles, Crocodilia (e.g. crocodiles), Sphenodontia (e.g. tuatara), Squamata (e.g. snakes and lizards) and Testudines (e.g. turtles).