#2 is nicely framed and includes the context of that really cool tree, but I wish the monkey took up more of the frame. Perhaps sacrifice some of the tree to crop down further.
#4 is interesting because of the pose and the look on the monkey's face, but it's a bit overexposed.
The lighting in #5 makes it look like a scene from Close Encounters. Well, the penguin version.
#6 - are those lemurs sleeping, or, um, you know...doing it?
#7 - pretty much the same comment as for #2, plus the tree/large stick is distracting and blocking the view of one of the lemurs.
#9 - Nice framing and good job catching a good "pose" (cut off tail notwithstanding - but those things can be long so I don't think it's as much of a sin as cutting off half a paw or something). Highlights are a bit hot on that one.