Gory footage confirms orca pods can kill adult blue whales

Killer whales are skilled assassins, hunting everything from herring to great white sharks. Now, for the first time, scientists witnessed a pod of killer whales bring down the world’s largest…

Vinegar eels can synchronize swim

Trapped within a bead of water, thousands of tiny worms wiggle in hypnotic synchrony as they stream around the globule’s rim. And at the center of this undulating gyre some…

A new device helps frogs regrow working legs after an amputation

The cells of adult frogs seem to remember how to regrow lost legs, and a new chemical kick starter helps them hop to it. Scientists have been seeking ways to…

Gut microbes help some squirrels stay strong during hibernation

Gut microbes give some squirrels a helping hand to stay strong during hibernation. The microorganisms appear to help the squirrels recycle nutrients to keep the rodents’ muscles taut, researchers report…

Urban animals may get some dangerous gut microbes from humans

Animals moving into the big city could be getting more than they bargained for. Gut microorganisms from humans in cities may be spilling over into urban wildlife, potentially putting the…

An Arctic hare traveled at least 388 kilometers in a record-breaking journey

Arctic hares can go the distance. A member of Lepus arcticus in northern Canada has traveled farther than anyone knew possible. BBYY, as the adult female was known, made a…

Scientists uncover the secret to fishing cats’ hunting success

When the famously enigmatic fishing cat hunts in deep water, it keeps calm and stays still. At least, most of the time.   Asia’s Prionailurus viverrinus prowls swamps and marshes…

A ‘trapdoor’ made of muscle and fat helps fin whales eat without choking

Some of the world’s largest whales feed by lunging through the water with mouths wide open. Scientists have long wondered how the animals withstand the tremendous pressure of water rushing…

These tiny beetles fly fast thanks to wing bristles and a weird, wide stroke

Featherwing beetles are some of the world’s smallest flying insects. Yet they can rocket along with the speed and agility of much larger insects. Now, scientists have figured out how…

An extinct rat shows CRISPR’s limits for resurrecting species

Before the early 1900s, if it walked like a Christmas Island rat and talked like a Christmas Island rat, it probably was a Christmas Island rat. But if one of…