As a female edaphosaurus drinks, a dimetrodon looks at her hungrily. He leaps out of his cover. But this edaphosaurus is ready for anything. She swings her tail and hits the dimetrodon in the face. He falls back and his tail dangles in the water. An ophiacodon mistakes this to be a fish and grabs the dimetrodon’s tail. The dimetrodon roars as the edaphosaurus swipes again…
