Axolotls, famous for their perpetually smiling faces, are critically endangered amphibians. Now, a new study offers some hope ...

One of the world's most endangered amphibians - the strange, perpetually smiling Mexican axolotl - has thrived after being ...

A sea animal that looks just like seaweed. It helps it hide from other animals in the water. A small, cute armadillo with soft pink armour. It lives underground in Argentina and is very shy.