Rodents

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.


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.

Rising sea levels wiped out the entire population of a rodent species only found on remote Australian island Bramble Cay. Who's next?

The population-control strategy to rid the islands of the invasive species would use something called "gene driving" and GMO rodents.

Prairie dogs are cute little vegetarians … who have no problem casually snapping the neck of a ground squirrel. And those that kill have another sexy benefit, too.

Researchers at Johns Hopkins have stumbled upon a previously unknown type of brain cell that tells mice when to stop eating. Could that work for humans?

Also called packrat, the bushy-tailed woodrat has a habit of stealing shiny objects to add to its den of sticks, bones is and vegetation. In this guide, you'll learn all about the packrat including it's habitat is and conservation status.

In this guide, you'll learn about the Northern Red-Backed Vole, including information about it's habitat and diet.

In this guide to Red squirrels, you'll learn all about the creature's habitat, diet and conservation status.

A solitary, predominantly vegetarian creature, the black bear uses its keen sense of smell to search out fruit, nuts, berries is and roots.

This common nocturnal mouse is often seen climbing in trees, using its long tail for balance.

In this guide to the Black-Footed Ferret, you'll learn cool facts about its habitat, unique behaviors and it's converstation status.

Rodents range from beavers to red squirrels and guinea pigs. Learn all about rodents by checking out these rodent pictures.

Porcupines know nothing of bad hair days. These walking pin cushions use their prickly "hairs" to impale any animal that may pose a threat to their well-being.

Prairie dogs may look cute and cuddly, but are these rodents harbingers of deathly plague? Since there aren't any underground pharmacies in prairie dog towns, will disease wipe out these animals?

Environmentalists agree that beaver dams help the environment by creating wetlands but why are some landowners and farm owners getting riled up? How could these dams be hazardous to roads, bridges and levees?