Which large reptile shared the Early Permian habitat and likely competed with or preyed upon *Eryops* juveniles?
Answer
Dimetrodon
The sail-backed reptile *Dimetrodon* occupied the same ecosystem and is mentioned as a competitor, likely preying upon juvenile *Eryops* or unwary adults.

Related Questions
When did *Eryops* most likely vanish relative to the Permian-Triassic extinction event?Where are the most definitive fossil remains of *Eryops* primarily recovered?What does the name *Eryops* mean, based on its derived morphology?Which anatomical design feature strongly suggests *Eryops* was an ambush predator?What type of dentition did *Eryops* possess?What was the general estimated weight range for *Eryops*?What unusual detail suggested external protection on the skin of *Eryops*?What characteristic of ancient amphibians, like *Eryops*, required reproduction to occur in or near water?Which large reptile shared the Early Permian habitat and likely competed with or preyed upon *Eryops* juveniles?Which epoch does the type species, *Eryops megacephalus*, date securely to?