A Black and White Tegu or Teyu Gauza scuttles across a lawn in Iguazu Natiional Park, Argentina. It may be found here and in southern Brazil. www.dixpix.ca/Amazon/fauna/riverlife/index.html
Going by names such as the Jungle Runner, the species ranges from Costa Rica to Colombia-- here in eastern Panama. This is a whiptail lizard, but it has lost its tail, presumably released to confuse a predator.