Dimetrodon

[Renato]

A Pelycosaur, it lived during the [Permian] Period, its name mean two types of teeth it is a distant ancestor of mammals, it had a sail on its back that was most likely used to look larger, to mate, and/or to [regulate] its body temperature faster, so it could get out of its [groggy] state faster, letting it be the top dog by eating less awake, warm, and focused pelycosaurs and other life-forms

[Vania]

A large, carnivorous, synapsid fossil reptile of the Permian period, with long spines on its back supporting a sail-like crest.