Compared with our distant cousins the reptiles, the faces of mammals are made more complex by a protruding nose that is separate from the upper jaw. While mice are commonly used as a model ...

The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a ...

A collection of KS1 Science videos showing some interesting facts about birds, reptiles and mammals. These clips can be used in the classroom to explore how these animals live, hunt and adapt in ...

Only a handful of mammals can regrow teeth multiple times, compared to the 50,000 species of reptiles and fish. Take geckos, for example, who will replace all 100 teeth, or so, every 3 to 4 months.

Vertebrates, for example, are divided into mammals, birds, reptiles, amphibians and fish. Mammals are warm-blooded animals with hair or fur and can produce milk to feed their young. They have ...

The teeth of horses and zebras look alike. The ear bones of mammals were once the jaws of prehistoric reptiles. And so on. Despite these differences, all mammals share four traits that are shown ...

Mammals first appeared about 240 million years ago when all the Earth's continents were joined together. Soon after this, and particularly when the continents started to drift apart, they began to ...