Nice collection; C&C per req:
1. Nice capture but there are blown highlights on the squirrels ches which are a little distracting.
2. Neat capture, would be nice to see a little more of his/her(?) chest.
3. Focus seems just a tad off; was this done with a close-up lens?
4. Very good; perhaps alter it so that he appears to be standing on level ground?
5, 6 Very nice
7. Maybe clone out the dark area upper left or cop closer to the duck.