Florida conducts first official cull of 5,000 invasive iguanas after unprecedented cold snap leaves reptiles stunned

Florida wildlife officials have euthanized over 5,000 invasive iguanas following an unprecedented cold snap that left thousands of the non-native reptiles “cold-stunned” and falling from trees across the state. The Florida Fish and Wildlife Conservation Commission (FWC) authorized this first-ever official cull as temperatures plunged below freezing in many areas, creating a unique opportunity to address the growing invasive species problem.

Green iguanas, native to Central and South America, have established large populations throughout South Florida over the past several decades. These cold-blooded reptiles become immobilized when temperatures drop below approximately 40-50 degrees Fahrenheit, a phenomenon known as “cold-stunning.” During this week’s unusual weather event, thousands of iguanas literally dropped from trees where they had been seeking shelter, creating scenes that both fascinated and alarmed residents.

The invasive iguana population has become a significant ecological concern in Florida, where the reptiles damage native vegetation, undermine infrastructure by burrowing, and compete with native wildlife for resources. Adult iguanas can grow up to six feet long and reproduce rapidly, with females laying dozens of eggs annually. The recent cold snap presented wildlife managers with an unprecedented opportunity to reduce their numbers through humane euthanasia.

While cold-stunning events have occurred before, this marks the first time state officials have conducted an organized removal effort. The FWC emphasized that the action was taken to protect Florida’s native ecosystems and prevent further environmental damage as the invasive iguana population continues to expand throughout the state’s warmer regions.