Dimetrodon is a Synapsids from the Permian. It life style was similar to modern day lizards. But unlike modern day lizards they used the sail on its back to keep its body temperature warm. When a female lays eggs the female will stay with there eggs until they hatch and the hatch-ling are free from the parents. The hatch-ling will try to escape there adults including there mom. Dimetrodon are cannibalistic and will eat there babies. Dimetrodon tend to be confused with reptiles, and dinosaurs when they are closely related to mammals.