Tapinocephalus ("humble head") is a genus of large herbivorous dinocephalian that lived during the Middle Permian Period. These stocky, barrel-bodied animals were characterised by a massive bony skull roof and short weak snout. It is thought that, like the rest of the members of its family, the animals engaged in head-butting intraspecific behavior, possibly for territory or mates. In life, these animals were over 3 metres (10 ft) in length and massed around 1.5 to 2 tonnes (3,300 to 4,400 lb), making them among the largest animals of their time.