The Fort Worth Zoo’s iconic iguana sculpture is now in hibernation, you might say, as it undergoes a major makeover.

"It’s gonna happen," biologist Joe Wasilewski warned. "If it’s in the 50s, they’re slow. If it’s in the 40s, they’re on the ...

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 ...

With temperatures expected to drop in South Florida by Wednesday morning, so will the iguanas. As seen in past cold spells, when temperatures dip below 50 degrees, iguanas seemingly freeze in place.

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.

Many iguanas in South Florida have adapted to going deep into burrows where they stay insulated from the cold. They also tend ...

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.