Even if they're not related, elephants 'mourn' their dead

All the world's songbirds come from Australia

Tasmanian devils are evolving to resist cancer

Italian wall lizards thriving in New York, now headed to Connecticut

Monster slugs are attacking birds in Europe

7 exotic pets wreaking havoc in the wild

Are there really dead wasps in your figs?

Swimming with dolphins may soon be banned in Hawaii

Zookeepers get clever to weigh animals

10 famous horses from history

Ancient marsupial 'micro lion' discovered in Australia

Seal hops on tour boat as killer whales circle