Paleontologists have long determined that modern-day birds evolved from smaller members of the two-legged, meat-eating theropods, such as velociraptors. However, for many years,...

While dogs openly demonstrate joy or displeasure through grins and grimaces, discerning  a cat's emotions from its face is often hard, even for its owners.  Now, researchers fro...

Wildlife filmmakers know to expect the unexpected when observing animals in their natural habitat. For a PBS Nature film crew trying to stealthily capture footage of Arctic foxe...