From massive predators to dangerous beasts, the UK was once home to animals you would never want to encounter today. This video explores the terrifying creatures that went extinct long ago.

From woolly mammoths to giant sloths, via some lesser-known ice-age beasts like 'killer koalas', the visuals in this ...

EUREKA, Mo. — Locals call them "ghost wolves." To scientists, they're "Gulf Coast canids." To the world's most endangered wolves, they may be a savior. A population of unique animals near Galveston, ...