Eryops averaged a little over 1.5-2.0 meters (5–6 ft) long, making it one of the largest land animals of its time. It weighed about 90 kilograms (200 lb). It probably had few predators, although it would have likely been preyed upon by Dimetrodon, which was larger and was the apex predator at the time. Several complete skeletons of Eryops have been found in the Lower Permian deposits, but skull bones and teeth are the most common fossils. Eryops was better adapted to a terrestrial environment than its ancestors. Sturdy limbs and a strong spine supported its body while out of water.