The cold-blooded reptiles, which rely on external heat sources to regulate their body temperature, are falling into a ...

The marine iguana is found only in the Galápagos Islands. From their sleek swimming skills underwater to their clumsy movements on land, they're perfectly adapted to their marine environment.

Evolution has resulted in the development of both herbivores and carnivores—but how? What type of food did extinct vertebrates eat? And how can we gain insight into the diets of these creatures? In ...

The cold-blooded reptiles, which rely on external heat sources to regulate their body temperature, are falling into a hibernation-like state during cold snaps.

A colorful yet destructive creature, the invasive green iguana has plagued South Florida since the 1960s. They are believed ...

On the rare occasion, the temperatures in South Florida drop to the mid-to-low 40s for about 8 hours or more. This is enough time for iguanas to become incapacitated. The iguanas aren't usually dead ...

On the other hand, when temperatures fall to the 40s, cold-blooded iguanas slow down. If they happen to be perched in a tree, the cold-stunned iguanas can fall out of the tree.