View Single Post
Old 03-07-2017, 10:40 AM
Colibri Colibri is online now
SD Curator of Critters
Join Date: Oct 2000
Location: Panama
Posts: 38,476
Originally Posted by Really Not All That Bright View Post
Related question: why are large lizards so common in South and Southeast Asia and Australia? The largest lizards (Komodo dragon, water monitor, crocodile monitor and perentie) are all limited to those areas.
Most of those are limited to islands or to Australia, where they have limited competition with carnivorous mammals. Also, monitors have a specialized anatomy including an effectively four-chambered heart that gives them greater aerobic capacity and allows them to be more active than other lizards. Monitors are more "mammalian" than other reptiles.

Last edited by Colibri; 03-07-2017 at 10:40 AM.