Castoroides

Description
"'Long extinct giant mammals, brought back to life as a part of the Megafauna Project." "Giant beavers, the largest to ever exist." "Its incisors aren't as well fitted for cutting wood as those of its modern equivalents, which is why it doesn't bother with constructing dams. This makes it so it will more often have to resort to either running from predators or attempting to fight them off, instead of simply hiding away from them.'"