Dogs May Remember Their Toys’ Names Even Years Later

New research suggests dogs can not only label objects in their heads, but can retain those labels for extended periods of time.

7 Ways Evolution Really Nailed Animal Camouflage

Blending in is about more than just color, as these creatures show.

Small Dogs Vs Big Dogs: Which Are More Unhealthy?

New research from the Dog Aging Project has found that large and small dogs both have their own unique set of health risks.

Unexpected Animals That Use Tools

You know about chimps and crows, but how about crocodiles?

You Really Don’t Want to Know How Giraffes Flirt

Recent research into giraffe behavior has revealed some unexpected—and, frankly, gross—mating habits.

Scientists Watched Hours of Cat Videos to Learn Something New About Kitty Behavior

Many intercat behaviors are somewhere between playing and fighting, but there are some telltale signs that a tussle is getting too aggressive.

Your Dog Might Cry With Happiness When He Sees You, Study Finds

Dogs seem to produce more tears when they're reunited with their owners—a behavior that might be driven by the hormone oxytocin.

Researchers Stalked Death’s-Head Hawkmoths in a Plane to Learn Their Navigation Secrets

These creepy moths could be as good at navigating as birds. In a groundbreaking study, scientists recorded them flying in a straight path for over 50 miles.

These Male Spiders Evolved a Post-Sex Catapult to Escape Cannibalistic Females

Researchers believe the trait is an adaptation to counter the females’ post-coital hunger.

Dogs Mourn the Loss of a Canine Companion, New Evidence Suggests

An overwhelming majority of dog owners noticed negative changes in their surviving pet following the death of a family dog.

These Orangutans Got Suspiciously Close to Inventing Stone Tools

Untrained orangutans seemed to instinctively use a stone hammer and cutting implement, surprising researchers.

Spider Seen Collecting Water, Possibly to Dunk Its Meal Like a Cookie in Milk

Rehydrating insect leftovers could be an easy way to get more out of a meal.

Biologists Shocked to Find Millions of Icefish Nesting Near Antarctica

A colony 1,000 feet below the ocean's surface contains an unprecedented number of the prehistoric-looking fish.

Which Animal Species Get Along the Best?

"It is clear that some animals become familiar and get along with group members that happen to be other species, but do they become friends?"

Convinced Your Dog Is a Genius? Scientists Want To Hear From You

The 'Finding Rico' project is looking for gifted dogs all over the world to better understand canine intelligence and their capacity for learning human words

Dogs Can Tell When You’re Keeping Snacks From Them on Purpose, Study Suggests

Dogs behaved differently when people intentionally kept food from them versus when they were "accidentally" unable to feed them, according to new research.

Wild Parrots in Australia Are Teaching Each Other How to Break Into Trash Bins

The socially learned behavior, and how it subtly differs between neighborhoods, is an example of animal culture, researchers say.

Puppy Experiment Shows How Dogs Connect With Humans From Birth

Will We Ever Be Able to ‘Talk’ With Our Pets?

Albert Einstein Ponders Birds and Bees in Previously Unpublished Letter