Baby humpback whales whisper to their mothers, new recordings reveal

First bison calf born in Banff National Park in 140 years

Can artificial insemination save the Mexican wolf from extinction?

8 species on life support

Why are fireflies disappearing?

5 surprising facts about roadrunners

Mom? … Anybody? Adorable bear cub needs a hand with clingy scallop

These male birds like to keep their wives happy and well-fed

Last 2 wolves on Michigan's Isle Royale reveal new info about predator-prey relationships

This video could be proof that efforts to return pandas to the wild are working

7 exotic pets wreaking havoc in the wild

Are these species lost forever? Not if this group can find them