Tyrannosaurus forelimbs look small compared to their bulky bodies and massive skulls, but the appendages were not as weak as they might appear. The arms of Tyrannosaurus were stout and heavily-muscled, so much so that the dinosaur could probably flex an excess of 430 pounds with each arm. No human bodybuilder can match that. And, if we’re going to tease any dinosaur for small arms, Carnotaurus is a more apt target. In the arms of this carnivore, the bones of the lower arm, wrist, and hand are compressed into a short skeletal stack attached to a flexible upper arm bone. IfCarnotaurus wanted to attack another dinosaur with its arms, the predator’s forelimbs would have only been able to do ineffectual pinwheels.
Take that, small arm haters!
They died having sex