1+3 have too much PP done to them... it doesnt feel right...
2 is weird, looks like you deleted the whole background and kept the selection of the dog, and it doesnt look natural
4 is a bit overexposed, but the focus is on the right part of the bee.
5 the circular crop isnt doing much for me
6 is a nice shot, correctly exposed, and i like the composition, but the focus is on the rear of the bee. it would of been great if it was on the bees head.