Of the 10 animals that live the longest, all of them live well past 100, according to a recent post in Disco very News. At the top of the list, the ocean quahog (aka the clam) lives to be 400 ...

For humans, reaching the age of 100 is a rare milestone. For some animals, however, it's hardly uncommon. Not all plants and animals age the way we do, and some are built for much longer lifespans ...

Water and air pose completely different challenges to animals on a number of levels.

Amphibians. Amphibians are animals that live both in water and on land. They start their lives in water, hatching from eggs, and then grow into adults that can breathe air.