Theories about how animals became multicellular are shifting as researchers find greater complexity in our single-celled ancestors. From one came many. Some 700 million years ago, a single cell gave ...

Trish Khan, the Milwaukee County Zoo's curator of primates and small mammals, has worked at the zoo for more than 30 years, and in that time, methods for naming animals have changed. "It used to be a ...

What is a cool bird? Cool types of birds can be beautiful birds, uncommon birds, or even the weirdest birds. Of course, what makes a bird ‘cool’ is subjective. For example, many people admire bald ...

Cats and dogs are popular pets, but many people are turning to more exotic species when it’s time to adopt. Since exotic pets generally require more maintenance, it’s important to do your research ...

From a Hercules beetle tough natural armor to a sea anemone’s soft fluid-filled body, nature boasts a variety of skeletons. A circa-1910 x-ray photograph of pot-bellied seahorses shows their ...