Charlotte i'm here
. watching
. so here is my opinion.
very good shots. you've used F 4.8 for last 3 ones and F 8 for no 1 and no 2. it's enough only for no 2 - looks fine. i love no 1 - very good composition and nice details. no 4 and 5 both have too small DOF - they are again with great composition but not enough details. try to use F 8 and more (F 11 if you can).
colours are good, exposure is fine, there are no any reflections from flash -
.
no noise -
on no 2 and no 3 you cut his tail
, it's not too bad but i'm interested how it looks.
generally those photos are really good. and interesting creature.
i was reading othe comments - no 3 is popular, for me it's interesting but i like that portrait
.