Something else I was curious about, as lots of resources and references say that greys need around 12 hours of "uninterrupted" sleep a night. I first wanted to know if the uninterrupted part was true. I've heard from one book that they can take naps to make up for sleep lost, and from another book that their day naps don't make up for the sleep lost. I realize all greys are different, but I'm just curious about what the majority of forum posters have to say about this. 12 hours a night is no problem for me since I tend to sleep that long anyways (due to medication). However, if the part about it being uninterrupted was true, I had one more question regarding it, which leads to the thread topic:
How sensitive are their hearing? I know that they are prey animals and so they probably pick up on slight movements and noises better than we can. But since they once lived in the treetops of the African basin/rainforest, you'd think they'd be used to background noise? Basically, I'm just wondering if things like late night TV (volume low), air conditioning turning on and off, people moving around downstairs, things like this would bother them at night.