Giant mega-swan discovered in New Zealand, confirming Māori legend

Capturing Florida's chameleons, one small invasive reptile at a time

A rescued sea otter pup is swimming in cute at the Vancouver Aquarium

9 extraordinary facts about North America's native bees

Meet the hoodwinker, a massive sunfish that's been hiding for centuries

Man helps sea turtle swim off into the sunrise

Rescuers free a young humpback whale tangled in buoys near Cape Cod

3 new toad species found in Nevada — but one may already be in trouble

Cecil the lion's son killed in trophy hunt

In the fight against HIV, cows emerge as powerful secret weapon

Why aren't the biggest animals also the fastest?

England gets its swans in a row