Like most reptiles, tegu lizards (Salvator merianae) were thought to be consistently ectothermic: They can’t sustain a body temperature that’s substantially higher than the ambient temperature. But ...

Once again, a popular exotic pet is poised to trample Florida’s native species as some owners tire of caring for their black-and-white speckled lizards with a healthy appetite and a yen to be free.

State wildlife managers are making a push to help educate the public about one of Florida's most dangerous invasive species: the Argentine black and white tegu. These invasive lizards can grow to 5 ...