The Philadelphia Zoo welcomed four new Western Santa Cruz tortoises, a subspecies of the Galápagos tortoise. What makes these ...

In many environments, resources and food aren’t always easy to come by and the availability of food can differ depending on ...

Just when you have come to terms with the immense list of things to see on the South American mainland, the continent's most ...

Here is a list of eight of the world's rarest animals. This critically endangered porpoise, found only in the Gulf of California, has fewer than 30 individuals remaining, making it the rarest marine ...