dinos and bipeds

[Bluebell]

I also think Ra could have interpreted Don's question very literally, especially given their explication on evolution. Bipedal simply means standing on 2 legs. There were many dinosaurs which were bipedal. There were also smaller mammals which primarily used two legs, but not in the same way as humans (think hopping rodents, etc.)

well wouldn't it be kind of douchy of Ra to not mention that bipedal means dino? also, coexistence implies non-dino bipedal.