Experts worry cheetahs may one day be on the brink of extinction and need artificial reproduction to save them. View on ...

Marker says the sperm bank at the Cheetah Conservation Fund she founded in the southern African nation is a “frozen zoo” of ...

What is a true animal sanctuary, and how does it differ from a zoo? Also, how can you tell if a zoo or sanctuary holds to ...

At 75 years old, Wisdom the albatross has outlived her mates, survived tsunamis, raised dozens of chicks, and is still ...

Dogs and wolves living today derive from a shared ancient wolf population that lived alongside woolly mammoths and cave bears ...

A new study reveals that red squirrels fed in city parks become pregnant 24 percent more often than forest females.

In the largest study of its kind, scientists have accurately documented the massive change in animal morphology over the last 1,000 years, with domesticated animals growing larger across the board and ...

Scientists are concerned that the H5N1 virus could set off another human pandemic. But it is already putting species under pressure in the wild. By Emily Anthes Every spring, more than 200,000 ...