Nearly 40% of mammal species are rodents, and they are found on every continent except Antarctica. Rodents include mice, rats, squirrels, chipmunks and beavers, among others.
These chunky little guys aren't dogs at all. They're actually part of the rodent family, and they're shockingly smart.
Lemmings don't commit mass suicide as is popularly believed, but they are aggressive and have even been known to charge larger predators.
It's an age-old question. How much wood would a woodchuck chuck? Turns out, none at all. So what would a woodchuck chuck if it couldn't chuck wood?
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?
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?
Groundhogs don't actually make great weathermen, but they are pretty cool in every other respect.
Arguably the most charming rodent in the world, the capybara is also the largest.
These adorable little rodents are popular as pets, but they require some special care.
There doesn't seem to be much of a gray area. Most people are a hard yes or yard no.
Perhaps it's a mating signal. Or meant to confuse owls and other predators. Or maybe it's just for looks.
The old saw about cats being good catchers of rats was finally put to scientific study — and the results were pretty sad.
It's a natural phenomenon known as a 'squirrel king.' But what's the deal and why do squirrels get tangled up?
The Indian giant squirrel is covered in flamboyant colors like orange, black and bright purple. But why?
Once you accept squirrels aren't going anywhere, you can apply a more creative approach to keeping the critters away from your prized tomatoes.
Nutria are jumbo-sized rodents that reproduce and eat at a jumbo-sized pace.
Naked mole rats are famous for their longevity, but they also don't age like the rest of us do.
Why do squirrels exhibit behavior that can get them killed by cars? And how can you avoid them?
The first new rat species found in the Solomon Islands in 80 years has been uncovered. But due to deforestation of its habitat, very few may still exist.
Research suggests that squirrels use mnemonic strategies to remember where they put the good nuts.
Despite our best efforts at eradicating them, rats keep outsmarting us. Here's how.
Deprived of oxygen, naked mole rats can alter their metabolic functions to something less mammalian and more plantlike, burning fructose instead of glucose.
It's like the movie "Groundhog Day" every April, but with hibernation, a smaller rodent and way more hormones.
If you look outside your window right now, you'll probably see one running up a tree or checking you out. How did the squirrel get so commonplace?
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.
They're dirty, hairy, mangy-looking creatures — and they giggle and squirm when tickled, just like us.