MIAMI - It's a South Florida phenomenon that draws amusement from across the country — when temperatures drop below a certain level, cold-stunned iguanas start falling out of trees. While it may sound bizarre, it happens. And there's a scientific reason for it.

Florida is facing freeze warnings, cold advisories and frost into the weekend. And don't forget to factor in wind chill.

Green Iguanas, a non-native species to Florida are typically in Central America, the tropical part of South America, and the eastern Caribbean Islands. Iguanas are cold-blooded so when the temperature drops,

When temperatures drop in South Florida, it can cause a big problem for Floridians: falling iguanas. When it gets too cold, the large invasive reptiles — which can grow to be up to 5 feet long and 20 pounds — get stunned by the temperatures and will often fall out of trees onto the ground or whatever may be passing by below.