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.
Pablo Escobar's Escaped Hippos Now Roam Wild in Colombia Rivers
Brazilian Free-tailed Bats Are Way Faster Than We Thought
Jia Jia, the World's Oldest Giant Panda, Has Died
Fear of the Human 'Superpredator' Causes Large Carnivores to Eat Less
New Research Helps Confirm Why Horses Have Single-toed Hooves
Kangaroo Anthropomorphism Crushed by Mother Nature
Orangutans Can Nurse for 20 Percent of Their Lives
Squirrels Are Hardwired to 'Dance' When a Car's Coming
Hedgehog Balloon Syndrome Sounds Adorable, Can Be Deadly
After losing part of her foot to a snare, the 6-month-old elephant named Clear Sky has to learn how to walk again.
By Christopher Hassiotis Jan 10, 2017
Ring-tailed lemurs — perhaps the most iconic species on the tropical island of Madagascar — are in significant decline due to habitat loss, hunting and illegal capture.
By Patrick J. Kiger Jan 6, 2017
Zookeepers in Europe feed their elephants surplus holiday foliage, giving the animals a treat they both eat and play with.
By Christopher Hassiotis Jan 4, 2017
Thanks to the humanlike pitch awareness of these adorable primates, researchers have more insight into how sound is processed in the brain.
By Alia Hoyt Dec 21, 2016
Turns out the reboot of 'Planet of the Apes' got one thing right — it's the brains monkeys lack, not the anatomy.
By Jesslyn Shields Dec 16, 2016
One Finnish town is trying out an unconventional method for protecting their pets from protected wolves.
They're dirty, hairy, mangy-looking creatures — and they giggle and squirm when tickled, just like us.
By Chris Opfer Nov 21, 2016
Who doesn't love a farsighted ape wearing reading glasses?
By Laurie L. Dove Nov 18, 2016
It turns out that one of the world's most enchanting animals has even stronger superpowers than we previously knew. Surprise!
By Jesslyn Shields Nov 17, 2016
Yes, these nocturnal mammals can fly faster than our most beloved speedy birds. And they beat the record by a long shot.
By Yves Jeffcoat Nov 11, 2016
Yep, these adorable Seussian misfits play a key role in the local environment.
By Robert Lamb Oct 21, 2016
According to the Guinness Book of World Records, Jia Jia's age of 38 was comparable to a human living to more than 114 years old.
By Christopher Hassiotis Oct 17, 2016
More than 180 countries signed a new agreement to combat trade of the pangolin—the most critically endangered animal you've never heard of. Will it be enough?
By Jesslyn Shields Oct 5, 2016
In research that showed intentional expressions of desire, horses have been added to the short list of animals that can use symbols to communicate with humans.
By Jesslyn Shields Sep 29, 2016
The most popular lady macaques show us why nitpicking pays off.
By Jesslyn Shields Sep 21, 2016
Can you tell one species of giraffe from the next? We've got some pics to help you out.
By Kate Kershner Sep 16, 2016
More than 30,000 African elephants are dying annually, according to estimates just released by the Great Elephant Census. Poaching is the main culprit.
By John Donovan Aug 31, 2016
Thanks to the work of conservationists, these rare California island foxes have been removed from endangered species list and marked totally recovered.
By Christopher Hassiotis Aug 23, 2016
We do it. Chimps do it. A new study out of Japan investigates just how far back on the evolutionary ladder this totally adorable behavior goes.
By Christopher Hassiotis Aug 16, 2016
Is it altruism? Revenge? Marine scientists aren't quite sure why humpbacks will sometimes save other animals from killer whales on the hunt.
By Christian Sager Aug 10, 2016
The cuddly cubs were born in the same zoo that experienced disastrous flooding in 2015.
By Christopher Hassiotis Aug 5, 2016
For some horses and ponies, Diet Coke can be a literal lifesaver.
By Kate Kershner Jul 27, 2016
Adolescent humans aren't the only creatures trying to get attention by doing their own thing.
By Karen Kirkpatrick Jul 20, 2016
Who's ready for operation iCow?
By Robert Lamb Jul 15, 2016
Hedgehog populations in Britain have dropped severely. Understanding how the animals have adapted to urban and rural spaces will help us help them.
By Christopher Hassiotis Jul 14, 2016
After Cyber Monday, Will People Open Their Wallets for Giving Tuesday?
3 Myths About Smartphone Batteries That Need to Die
Do You Have to Pull Over for a Funeral Procession?