It didn't really have any enemies, however, because who would mess with an animal the ... the management of all city trees ...

We can study animals from all over the world thanks to science, but what about those that no longer exist? The list of extinct mammals could go on for ages, but each animal has a unique story.

Females and their young roamed in herds of about 15 individuals. Male mammoths would leave the herd at the age of 10 years ...

A biologist at the University of Connecticut has found evidence that up to a third of all species alive today could go ...