A new study on aging in the animal kingdom has highlighted how urgently Earth's oldest ... often large and wise animals in the wild and the value these individuals have to scientific knowledge, ...

A reshuffling of the animal kingdom may be necessary in light of new genetic findings -- not to lions, tigers or bears, but worms, a recent study suggests.

University of Arizona researchers have launched what they believe to be the first open-access catalog of animal traditions in ...

Instead, this flagella-waving oddball stands as the first member of its own “supra-kingdom” group, which probably peeled away from the other big branches of life at least a billion years ago.