Male snakes have two penises, each with its own testicle, but they only use one at a time.  During copulation, the male inserts one hemipenis into the cloaca of the female to transfer his...

Death is inevitable for male octopuses once they’ve mated because they stop feeding, they become uncoordinated, often attracting predators in the wild, and they lose the ability to heal their skin....

Yes, dead jellyfish can still sting you, even if you find one washed up on the beach.  And it doesn’t have to be a whole jellyfish - even small bits and pieces of tentacle can cause a painful...

Woodpeckers can have amazingly long tongues for probing into wood and extracting grubs and insects.  Bird tongues are very different from our own.  Birds have a Y-shaped system of stiff,...

Albatrosses are large seabirds with the longest wingspans of any bird in the world, up to 10 or 12 feet.  As a biologist, I became intrigued with the flight of the albatross after watching huge...

Whenever I listen to the song of a Humpback whale, I am captivated by the eery quality of the complex sounds. There’s no doubt that whales are highly intelligent creatures that regularly...