When they climb to the top of something they crawl up onto the ledge and it's cute because they're pudgy and adorable
When they laugh they fall on the ground and roll around all cute-like
Why on earth would you choose anything else?
Seriously, why would you? The nimble, wonderful, fierce popori are handily the best race in the game, and there's really no reason to play as any of the other races. Well, except for the cute bunny anime chicks - we guess they're pretty cool, too.