Okay, this is TOTALLY a tough call bc they're each so different!!
#1: this one is a "moment" picture, a candid - "I caught you" pic, which captures something unique
#2: this one is him perfectly posed and just very handsome and adorable, he's having a very good fur day here. His expression is
kind of "take the picture MOM"
#3: LOVE his eyes here - he looks totally engaged, like he's about to pounce right at the camera at any moment - so I see some naughty, wide-eyed playfulness in his expression here, which is just shining in his little face in this picture; I almost feel like he has his eyebrows raised here like "You want some OF ME?" in this pic; I think he really comes through here
So then, clear as mud? Yeah, totally can't decide here. I think if you want candid, go w/ #1. Otherwise, if you want classic - go w #2, but see if she can capture that look in his eyes from #3. I clearly spend too much time with my camera, does it show?