Colorado residents asked to be on alert after 6-foot lizard escapes home WOODLAND PARK, Colo. - Emergency notification calls have gone out to residents in three Colorado subdivisions to be wary of a missing 6-foot-long lizard. The owner of the escaped Nile monitor lizard named Dino says his pet got loose Monday and he hopes no one will hurt it. According to KRDO-TV, the unidentified owner says his 25-pound lizard broke through its mesh leash. He says the lizard won't eat any animal bigger than a prairie dog. Emergency notification calls were made to residents in surrounding subdivisions in Teller County west of Colorado Springs. Teller County Sheriff Mike Ensinger says residents need to be careful because the animal can be aggressive.