Anyone who has watched a rooster stalking around a farmyard might agree that there is something very dinosaur-like about birds. That may come as no surprise, given that birds are dinosaurs. But in ...

Birds and reptiles may not resemble humans in many ways, but they cry similar tears. The composition of human tears is well known, but until now, there was very little research into the composition ...

New research has revealed that birds, reptiles, and mammals have developed complex brain circuits independently, despite sharing a common ancestor. These findings challenge the traditional view of ...

When we breathe out, we empty our lungs. But an ancient reptile figured out a more efficient way to breathe, which ultimately ...

Emi Knafo, DVM, DACZM is a zoological medicine specialist and assistant clinical professor of zoological medicine at the University of Tennessee (UT) in Knoxville. She grew up ...

Mammals and birds have dramatically more neurons in their forebrain and cerebellum than reptiles, and neuron numbers have scaled up significantly only four times in more than 300 million years of ...

The harpy eagle is one of the largest and most powerful eagles in the world, and seeing one up close can be startling. With ...