Zoologists who work on cold-blooded Animalia species, i.e.
- reptiles (Sauropsida or Reptilia) like Squamata (snakes, lizards...), Testudines (turtles, tortoises, ...), Crocodilia (crocodiles, caimans, alligators, ...) and Sphenodontia (tuataras);
- and amphibians (Amphibia) like caecilians, frogs, salamanders, toads...