We humans are hairy mammals. Mammals also have lungs and breathe air. But surprisingly not all mammals live on land. Whales are air breathing, hairy mammals which live in the sea. Even dolphins ...

Amphibians and reptiles play important roles in the ecosystems where they live. Some serve as predators that keep their prey's numbers in check, like snakes that eat mice and other rodents. Other ...

Well, there's actually an important trade off for this nuisance. Only a handful of mammals can regrow teeth multiple times, compared to the 50,000 species of reptiles and fish. Take geckos ...

The nearly 41% of endangered amphibian species compares with 27% of mammals, 21% of reptiles and 13% of birds, the study said. "Amphibians are the world's most threatened animals," Duke University ...

Mammals live all across the world. They can be found living in the ground, in trees, and even in the sea. There are many different kinds of mammal, including us humans! Find out more about ...

When we think of Canadian animals, the moose or beaver probably come to mind first — but according to a new study, the most distinct animals in Canada are creatures like the spiny softshell turtle and ...

In fish and amphibians, nephrons within opistonephros differentiate into proximal and distal regions. In reptiles, birds and mammals, the metanephric tubules become differentiated into three regions: ...