05/12/2026
These carnivorous lizards, like the Argentinian Black and White Tegu, and The Nile Monitor Lizard are another example of humans being directly responsible for releasing invasive species into the wild.
Crocodile Lake National Wildlife Refuge’s Invasive Species Biologist recently led an Early Detection Rapid Response (EDRR) effort to locate and capture an Argentine black and white tegu (Salvator merianae) first spotted on April 25, 2026. This marks only the second known occurrence of this invasive species in North Key Largo.
Following the sighting, refuge staff deployed remote cameras and live traps across the area. Based on behavior and physical characteristics, there is high confidence that the captured tegu is the same individual observed earlier.
Because tegus are large, omnivorous lizards capable of threatening federally listed wildlife through predation and competition, we'll keep monitoring the area to protect our native species. Thanks for supporting conservation!
Photo Credit: Isabella Collamati
