Falling Iguanas Could Return With Florida's Cold Front

MIAMI (CBSMiami) - For the second time in two months, a reminder that you may want to watch out for falling iguanas.

With temperatures tumbling Friday morning, it is possible that the cold-blooded iguanas could tumble out of trees due to the cold weather.

The invasive species can't handle cold temperatures very well. In general, iguanas begin to get sluggish or lethargic once the temperature drops below 50 degrees Fahrenheit.

Once the temperature drops below 45 degrees Fahrenheit the iguanas go into a dormant or cold-stunned state. They appear to be dead, but they are not. They remain breathing with critical body functions still operating.

But not all iguanas respond the same.

According to Zoo Miami Communications Director Ron Magill, it depends on the size of the iguana. He says the larger the iguana, the more cold it can tolerate for longer periods.

Adult male iguanas can reach 5 feet in length, and weigh up to 20 pounds so you don't want one of these guys, sleeping in a tree, to fall on your head or your car.

Iguanas go into this cold-stunned state as a way of protecting itself until the temperature warms back up above 50 degrees.

Many iguanas in South Florida have adapted to going deep into burrows where they stay insulated from the cold. They tend to also live close to large bodies of water, which tend to be warmer than the air temperatures, which help them survive short cold snaps.