Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow ...

Mommy, the estimated 97-year-old Western Santa Cruz Galapagos tortoise, became the oldest-known first-time mother of her ...

became the oldest-known first-time mother of her species upon the hatching of her four babies, the Philadelphia Zoo announced in an April 3 news release. The first of the four siblings hatched on ...