Imagine a world where the boundaries between “fish” and “not-fish” blur, where the ancestors of birds and mammals once swam ...

Have you ever looked into the mirror and wondered just how deeply your roots stretch back in the tree of life? It might ...

Other herps are the prey, like frogs who serve as a food source for many species of birds, fish, mammals and reptiles. In addition, herps are valuable indicators of environmental health. Amphibians, ...

Two Arizona national parks were named among the best parks for seeing wildlife like mountain lions, bison and birds. Here's ...

The Great Smoky Mountains National Park ranked second overall, but it is the top park in the nation to see amphibians, slugs ...

Answer: Birds do not have the sex organs common to mammals. Instead, both male and female birds have what’s known as a cloaca ...

Samples of living skin cells, gametes (sperm and egg), and reproductive tissues of mammals, birds, reptiles, amphibians, and fish are stored in liquid nitrogen freezers at -320 degrees F in cryogenic ...