Animal Behavior

Though it is well-known for its many arms, the octopus does not seem to know where those eight appendages are most of the time. “In the octopus, you have no bones and no joints, and every point in its...

One moment a herd of goats is milling around, casually browsing the scrubby grass. The next, their long ears twitch and their wide golden eyes stare as they trot off purposefully, picking up speed as they...

In August 2012, Douglas Bastos, then a graduate student at Brazil’s Instituto Nacional de Pesquisas da Amazônia, was exploring a remote waterway in the Amazon rainforest when he came across a small...

You might know what a hydrothermal vent looks like: black plumes billowing from deep-sea pillars encrusted with hobnobbing tubeworms, hairy crabs, pouting fish. But do you know what a hydrothermal vent...

Some 230 million years ago, in the forests of what humans would eventually call Brazil, a small bipedal dinosaur zipped after its prey. It had a slender head, a long tail and sharp teeth, and it was about...

A pack of baldheaded, boldly plumaged birds steps through the grass shoulder to shoulder, red eyes darting around. They look like middle schoolers seeking a cafeteria table at lunchtime. Perhaps they’re...

In the perennial battle over dogs and cats, there’s a clear public relations winner. Dogs are man’s best friend. They’re sociable, faithful and obedient. Our relationship with cats, on the other...

The fanciful colored markings of poison dart frogs are a warning to predators: If you eat me, you’ll regret it. These tiny, colorful creatures secrete bitter toxins in their skin, and birds have come...

Humans can be a terrible influence on birds. Crows that live near us end up with high cholesterol, sparrows screech to be heard over oil pumps, and instead of migrating, some storks now just eat trash. At...

Poaching destabilizes nations, disrupts ecosystems and threatens biodiversity. A recent study suggests still another consequence: Some types of poaching may also accelerate climate change. Forest elephants...

Q. Our dog escaped from the car. How did he find his way home the next day from nearly three miles away? A. What took so long? Dogs are well known for their ability to backtrack to a beloved home —...