An Orlando, Florida, man found a lizard in his backyard last week. But this wasn't just any lizard. It's believed to be an Argentine black and white Tegu. "I went, 'Oh my God.' I knew what it was," Gary Nunn said about spotting it for the first time. He decided to trap it. "Because I don't want them running around terrorizing my cats," Nunn said. "They don't belong here."He used a cage to catch the lizard using some pretty simple bait — cat food. He has lived in his East Orlando neighborhood for 12 years. He hadn't seen one until recently. But that didn't surprise Ron Magill with Zoo Miami. "Florida has become the Ellis Island of exotic animals," Magill said. Magill says tegus are an invasive species that likely came to the state as a pet that got out or was released. They're more common in South Florida than in Central Florida."They are a very adaptable lizard," Magill said. "It doesn't surprise me to see them slowly but surely migrating up the state."Tegus were added to the state prohibited list in 2021. Sister station WESH 2 sent Magill a picture of Nunn's lizard just to be sure. "That is in fact a tegu," he said. "Absolutely, there's no question about it." And Magill says they can be a problem for certain animals. "If you have any kind of small livestock, if you're in a rural area, you're raising chickens with eggs or anything with eggs. Tegus love eggs," he said. "They'll go into eggs whatever chance they get. And they will take small birds. They take small mammals."But he says the big concern is the impact on the ecosystem. "They are just such a large, powerful lizard that they outcompete native species for food. And when you start outcompeting these native species, that can have a snowball effect on the environment and ecosystem as a whole," Magill said. Officials with the Florida Fish and Wildlife Conservation Commission say tegus can be humanely killed on private property. Nunn isn't sure what he'll do with the one he's caught. "Hopefully, somebody will want to take it; otherwise, I'm just going to have to kill it. I can't let it free," Nunn said.