What I find odd about Therizinosaurus is that it looks like a half-plucked turkey and seemed to walk like a pot-bellied bear. Their arms were ten-feet-long while each of their claws were each three-feet-long. I hear some experts theorized that Therizinosaurus and its relatives were so tough that they could hold their own against Tyrannosaurs. While it was a theropod, Therizinosaurus was a herbivore instead of a carnivore like the rest of its kin. It certainly was one of the greatest oddities among dinosaurs.