The animals of our planet walk on two legs, or four legs, or six, or even 750 for that matter. So why don’t any animals have three? The rest of this article is behind a paywall. Please sign in or ...

In a Netherlands zoo, an elderly chimpanzee named Mama is weak and dying. Elderly biology professor Jan van Hooff, who has known the primate for four decades, enters Mama’s enclosure—something usually ...

Stacey Tabellario and Mindy Babitz are like many new mothers. They are with the baby every second she's awake. They watch her on a monitor while she sleeps. They prepare bottles, talk to her and carry ...

While speediness is a priority for any animal trying to escape a predator or avoid a fall, a new study suggests that even the fastest reflexes among all animals are remarkably slow. While speediness ...