Therizinosaurus is the namesake of the odd group of herbivorous Theropod dinosaurs known collectively as the Therizinosaurs. These guys are related to the Oviraptors, Ornithomimosaurs, and the Alvarezsaurs, all of which are thought to have a largely plant-based diet. This seems odd when you first think about it: plant-eating meat-eating dinosaurs? But similar things occur today. For example, the order Carnivora today includes many meat-eating animals such as cats and dogs, but also includes the bears, where plants and berries factor into their diet a great deal. For some, like the panda, they eat almost entirely plants. The Therizinosaurs have been likened to the recently extinct giant ground sloths in the fact that they seemed to have pot bellies in which to ferment their food, as well as enormous claws that probably helped a great deal in protection, as these guys were most certainly not the swiftest of runners. Therizinosaurus is just so bizarre and wacky, which is what makes it my most favorite dinosaur!