Scientifically-speaking there are 11 mammal groups, and most Mammals are warm-blooded, have body hair, give live birth and nurse their young with milk from mammary glands. Check out these articles about all kinds of mammals.
Researchers developed technology that allows monkeys to maneuver around in robotic wheelchairs, using only their thoughts to navigate. That has implications for humanity.
The current orcas residing at SeaWorld will be the last generation housed there.
Feral monkeys have roamed Silver Springs State Park in Florida since the 1930s.
As the climate changes, some pika populations may die out, but others will flourish. A new study examined what's likely to happen in eight U.S. National Parks.
A study finds wolves howl differently depending on the species.
"The Jinx." "Making a Murderer." And now, orangutans? Why this female-on-female ape killing took researchers by surprise — and reads like a human true-crime drama.
Motion-sensing cameras, detailed maps and a special poop-detecting dog all played a part in finding the jaguar nicknamed "El Jefe."
The white winter coat of a snowshoe hare protects it in the winter, but evolution can't keep up with a rapidly changing climate and shortening snowfalls.
When it comes to zebras, humans have a lot of questions. Why can't we ride them? What are the stripes for? Turns out some scientists may have just answered that last one.
What do bats have in common with ice skaters and one-legged ducks? The answer to that helped illuminate one perplexing thing about the flying mammals.
Breaking multiple records, Sarah set speeds never matched by any other animal. She was euthanized earlier this week by the staff at the Cincinnati Zoo, where she lived.
Groups of European bison make movement and grazing decisions by popular vote, choosing to follow or ignore potential leaders' suggestions.
Once more, humanity's attempts to view other animals as human lands us in a difficult spot, as this week's widely circulated photo of a "grieving" kangaroo illustrates.
Pop culture has depicted chimps and other primates as both gun-wielding villains and saviors, but should humans be concerned about the possibility of armed apes?
A new study shows how animal's pupils have evolved to help them survive in their ecological niche as predator or prey.
Can endangered species be saved with insemination from the Great Beyond?
Creatures from pachyderms to bees are better than humans at detecting scents.
Some bats are messing with their neighbor's sonar to throw them off the track of food.
Bats can spread deadly human diseases. Join Lauren as she interviews a virologist about the powerful immune systems of these fascinating creatures of the night.
Afraid your formerly humble bonfire has grown a little out of control? Never fear: Your trusty rhinoceros firefighters brigade should be along to stomp it out at any moment. At least, that's the legend. But is there any truth to it?
Cheetahs share so much DNA that they're practically clones of one another. But what does this mean for the future of the species?
Monkeys share a lot in common with us, but are they just as superstitious? We know that have the ability to gamble, but is it deeper than just a game to them.
As fans of George R.R. Martin's "Song of Ice and Fire" series know all too well, a person encountering a dire wolf will likely end up in dire straits. But while these fearsome beasts make for great fiction, do they have any grounding in reality?
They say an elephant never forgets, but there's no need to put such unattainable expectations on the poor creature. After all, everyone forgets something at some point. Here's a better question: How much can an elephant remember?
Ah, the duckbill platypus: the creature so strange it's said to be cobbled together from a bin of spare animal parts. With its odd appearance -- and even odder abilities -- it's no surprise the creature was once dismissed as an elaborate hoax.