One man is saving dozens of cows abandoned on the streets of Kathmandu.
The people rescuing animals in surprising ways.
The axolotl has almost been wiped out by pollution and over-fishing.
An endangered bird from the early 16th Century is making a comeback in Europe.
Conservationists are cutting off the horns of rhinos to protect them.
One man describes how he was able to save a humpback whale.