Period: Dimetrodon lived in the Paleozoic Era, which was during the Permian period, about 280 million years ago.

Habitat: Dimetrodon lived in swampy areas. However, some fossils have been found in Texas and Oklahoma.

Diet: Dimetrodon was a carnivore, which means it ate meat.

Size: Dimetrodon was 11.5 ft. (3.5 m) long and weighed about 550 pounds.

Description: Dimetrodon walked on four legs that sprawled out to the sides. Dimetrodon was most likely a fast runner. Dimetrodon had a huge head and mouth. Dimetrodon had two types of teeth. One set, were sharp canines and the others were shearing teeth.