Male lion in Bouba Ndjida National Park, Cameroon, is one of a dwindling number of the big cats in West and Central Africa, where humans are encroaching on their habitat—and that of their prey.
Earth's earliest known forms of animal life were trailblazers.
“Vision” in single-celled Synechocystis works by principles similar to the human eye.
The fate of the Caspian seal may have been decided ﬁve million years ago.
Robber ﬂies are top predators in the insect world.