Mammals
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.
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Puma, panther, mountain cat, mountain lion, mountain screamer, painter, catamount and, yes, cougar. This cat has a lot of names!
By Wendy Bowman
With their fierce jaws and cunning hunting tactics, spotted hyenas don't seem to have much to joke about. So what do those spine-chilling peals of laughter really mean?
Seals have long been known as dry-land clappers, but the first-ever percussive clapping observed by scientists has blown seal clapping theory out of the water. Or should we say under the water?
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The maned wolf might as well be called a werewolf given its unfortunate name. You see it's not a wolf at all, and despite all appearances, it isn't a fox either.
By Mark Mancini
The polar bear's shocking whiteness, ferocity and sheer size make it an icon of purity and power. How do these animals survive in a frigid climate?
But, squirrels that strongly prefer one hand over the other aren't as good at learning, one study suggests. What does this mean for you and me?
"Pure coyotes" are now much rarer than what we would consider coyote-wolf hybrids, or coywolves.
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Elk are some of the most majestic animals in the world, but also some of the most aggressive. Here's what you need to know about the territorial elk.
With lightning speed and incredible vision, the cheetah is the fastest land animal on Earth and the best hunter on the savanna.
It may be the world's smallest fox, but its ears give it a huge hearing advantage.
Reindeer are, of course, best known for their main gig om Christmas Eve every year, but there's more to them than just their flying and sleigh pulling prowess.
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Beaver attacks get a lot of media attention but are beavers really crazed killers that we should be afraid of? And what good do they really do?
They look so cute and fluffy, but koalas have a fierce side too. Still, their biggest threat to survival is mankind.
By Alia Hoyt
Gorillas can live to be about 35 to 40 years old and are much gentler (and much sleepier) than you might think.
The female emu may lay the eggs, but the male emu does all the caretaking. And that's just one fascinating thing we learned.
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They're the cutest and most curious masked mammals around. But they also have a reputation for being a nuisance. Here's everything you need to know about the raccoon.
By Meg Sparwath
Sea otters are adorable, back from the brink of extinction and will totally bite you.
Move over Dracula. These fish, birds and bats really are the vampires of the animal world - and they do need to eat (or suck) blood to sustain life.
By Mark Mancini
Manatees are so gentle and sweet they'll break your heart, but in 2021, there have been more manatee deaths than in any year in previously recorded history. Why are these gentle giants dying in such unprecedented numbers?
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It turns out that bobcats do just fine if not actively hunted by humans.
The wars between mink species and humans quietly rage worldwide.
Though ol' Wile E. never did catch the Road Runner, coyotes are some of the most ingenious and adaptable animals on the planet.
These impressive and intimidating animals have an illustrious past that helped them wend their way through America and settle in the heartland of the South.
By Mark Mancini
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These berserker weasels are the ultimate cold weather survivors - cagey, smart and omnivorous.
Groundhogs don't actually make great weathermen, but they are pretty cool in every other respect.