Predators

What killed saber-tooths remains a mystery.

The pliosaur had a bite four times as powerful as T. rex.

An octopus will turn itself into a conch shell or coral reef to avoid being eaten.

The bioluminescent belly helps the teensy shark hide from predators below.

The fish and pterosaur likely drown in the noxious ancient seas.

The tyrant lizard's bite seems to be the strongest of any living or extinct land animal

The scientists didn't realize at first the shark had a fellow shark in its mouth.

Fear of humans is now a key factor that drives lion behavior.

Horseflies are turned off by the light reflected by the stripes.

Zookeepers must strive to satisfy their predators' natural urges and dietary needs within their limited confines.

Rather than brute force, tyrannosaur youngsters used their quickness and agility.

The arm bones of the extinct Tasmanian tiger show they hunted differently than dingoes, which could mean the competition might not have been the major factor leading to their demise in Australia.

A toxin captured in old feathers matches increases in toxic pollution.

Some dinosaurs may have stayed out all night, like modern nocturnal animals.

This is the first case of rocky lenses in the animal kingdom.

And the whales prefer a certain type of seal over others.

Ten adorable and endangered African wild dog pups born at Brookfield Zoo.

A lining of white plastic in a black kite bird's nest may warn other birds to back off.

Newly discovered sabertooth species may have left some of their kills for human ancestors to scavenge.

The creature's fearsome-looking claws may have been relatively benign.