__________ may have been large-bodied endotherms, which had a high metabolic rate.

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Therapsids were a group of mammal-like reptiles that lived during the Permian and Triassic periods. They had advanced characteristics such as hair, a secondary palate, and differentiated teeth. Some of the therapsids, like the famous Dimetrodon, had large sails on their backs, which may have helped regulate their body temperature. These features suggest that therapsids were endothermic, or warm-blooded, animals. Additionally, some evidence shows that therapsids had a high metabolic rate, which is indicative of endothermy. Therefore, therapsids may have been large-bodied endotherms.

__________ May Have Been Large-Bodied Endotherms, Which Had a High