The Nile monitor is an invasive, aggressive lizard species established in parts of Florida. These large lizards can grow over 6 feet long and are skilled swimmers and climbers. While not venomous, ...

"He's a big fella, and he's scary," homeowner Zachary Lieberman told "GMA." A 6-foot-long lizard has been terrorizing a Florida family for weeks after taking up residence in their backyard. "He's a ...

After a large monitor lizard was recently liberated from a storm drain on the side of Loop 101 in Phoenix, people began to wonder what monitors are and whether they belong in Arizona. A monitor lizard ...

Meet the Nile monitor, an invasive species that the U.S. Geological Survey has called the largest and most dangerous lizard in America. It's well established in Florida, and there have been sightings ...

Invasive Nile monitors in Georgia have been labeled the largest and most dangerous lizards in the U.S. Where are they? How dangerous are they?