Unlike the green iguanas that have become a familiar, if unwelcome, sight in the region, Nile monitors are aggressive ...

"You cannot wait until an invasive species has demonstrated its impact upon the ecosystem. If you do, then it's too late." ...

A large, aggressive lizard species is establishing breeding populations across South Florida, and it’s nothing like the iguanas residents are used to seeing on seawalls or in backyard mango trees.

In South Florida, a growing population of invasive iguanas has become such a serious problem that hunters are now being paid to remove them from neighborhoods, canals, and private land. This video ...

Another giant reptile is clawing its way toward disrupting the South Florida ecosystem as an invasive species. The Nile monitor -- a semi-aquatic lizard equipped with razor claws that can grow up to 6 ...

Three striking new species of rock-dwelling monitor lizards have been formally described from the savannas of northeastern ...

Nile monitor lizards, an invasive species, are making their presence known in Cape Coral as temperatures rise.

Another giant reptile is clawing its way toward disrupting the South Florida ecosystem as an invasive species. The Nile monitor -- a semi-aquatic lizard that can grow up to 6 feet and is equipped with ...

Invasive Nile monitor lizards are carnivorous, can grow over six feet long, and are considered dangerous to humans and pets. Most of the over 2,000 sightings have occurred in South Florida, ...

Invasive, carnivorous Nile monitor lizards are a dangerous problem in South Florida. These lizards can grow up to six-and-a-half feet long and pose a threat to small pets and native wildlife. Most ...

Sergio Candido is the managing editor for the South region at cbsnews.com, coordinating multiplatform news coverage for CBS Miami, CBS Texas and CBS Atlanta. He previously worked for outlets including ...