Both scholars and Adventurers have debated the origins of the owlbear. The most commonly posited theory is that a crazed wizard created the first beast by crossing a giant owl with a bear.
However, Adventurers, i have found a rare volume that illuminated the true origin of the foul Creature. Gary Gygax created the owlbear and introduced the creature that haunts the dreams of rogues and Paladins alike.
Honestly, what kind of sadistic individual would do such things to us?
Well, obviously, someone from Chicago...
Check your Sizing chart.