Researcher cameras capture tegu lizards swiping alligator eggs from nests in South Florida. The Argentine black and white tegu, which can grow 4 feet or more, is already found in areas populated by threatened species, including the Eastern indigo snake, Cape Sable seaside sparrow and gopher tortoise. And if the tegus' range expands, the list of native species potentially at risk could grow to include sea turtles, shore birds and ground-nesting migratory birds.
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