Warning: Falling iguanas

Residents of South Florida got an unusual warning from the National Weather Service in Miami on Tuesday: “This isn’t something we usually forecast, but don’t be surprised if you see iguanas falling from the trees tonight as lows drop into the 30s and 40s. Brrrr!” It was a fair warning—male iguanas can grow to at least 5 feet long and weigh nearly 20 pounds.

Are the iguanas OK? Low temperatures stun the lizards, causing them to fall from the trees, but they won’t necessarily die. Many of them woke up as temperatures rose on Wednesday. The invasive reptiles often damage seawalls, sidewalks, and landscape foliage, but aren’t aggressive toward humans.