I think Ra was able to read the intent behind Don's thoughts. But I agree with Austin, if it was important to preserve free will, they may not correct Don or attempt to clarify for him. So in a nutshell, I think they could have been referring to bipedal animals or they could have been referring to bipedal humanoids and there's no way for us to tell for sure.
As an aside, I believe that Ra purposefully did not correct/clarify Don several times throughout the material to preserve his/our free will. Its the primary reason I wish there were some way to get more questions to them to at least clarify a few points.
As an aside, I believe that Ra purposefully did not correct/clarify Don several times throughout the material to preserve his/our free will. Its the primary reason I wish there were some way to get more questions to them to at least clarify a few points.