A new study shows that the body size of the iconic gigantic or megatooth shark, about 15 meters (50 feet) in length, is indeed anomalously large compared to body sizes of its relatives. Formally ...

If terms like "bird brain" and "harebrained" are any indication, animal brains present fascinating and diverse examples of one of the most complex organs known to science. Animal brains differ not ...

The meat-eating dinosaurs known as theropods that roamed the ancient Earth ranged in size from the bus-sized T. rex to the smaller, dog-sized Velociraptor. Scientists puzzling over how such wildly ...

Behavior that we’d consider intelligent is oddly widespread in the animal kingdom. Animals with very different brains from ours—a species of octopus and various birds—engage with tools, to give just ...

Many aspects of our world, from the body mass of creatures in the animal kingdom to the population of cities across the globe, follow an intriguing mathematical pattern. Known as Zipf's law, the rule ...