Did you know there are 21 groups of
mammals? Or that there are nearly 5,000 species of mammals? Find out these facts and more in
this article about mammals.
Amphibians are a group of animals that includes newts, salamanders, caecilians, frogs and toads. There are between 5,000 and 6,000 species of amphibians alive today. The following articles will introduce you to amphibians and their various groups:
Monotremes are a unique group of mammals. Unlike placental mammals and marsupials, monotremes lay eggs instead of giving birth to live young. Monotremes consist of two subgroups, the echidnas and the platypus.
Pinnipeds are marine mammals that include three groups, the eared seals (also known as the fur seals), the true seals, and the walrus. This group of mammals are sell suited for life in the water, with a streamlined body and powerful flippers, insulating blubber and the ability to stay underwater for long periods of time.