They get less than any other animal, which leaves a jumbo-sized hole in theories about why animals snooze at all.

Despite their wacky brains, these intelligent animals seem to respond to the drug in a very similar way to humans.

The quietest sounds might still disturb wildlife.

The placebo effect shows up in pets too, but these treatments are fooling owners, not their animals.

We may not be the only species to call one another by name or to plan ahead for our future.

Exchanging wildlife specimens with museums and zoos can help law enforcement stop smugglers.

Arachnids are proof that animals don't need big brains to be brilliant.

The country’s wildlife agency, faced with a drought and financial troubles, has asked Zimbabweans with land to take its animals.

Invasive species are sometimes trapped, poisoned, and shot in large numbers to save native species from extinction. Some scientists say the bloodshed isn’t worth it.