First, I would like to say that I like the photo. I think that the focus and sharpness is good, and I like the square crop. Some things that would improve a photo like this would be if you captured it with its eyes open, and had a better background.
While you didnt receive many comments, one of them did allude to the fact that they thought it was a shoehorn, and didnt relate to the challenge. While I personally think it does, as I would assume that any pet would imply friendship, I also understand that not all voters will agree with this interpretation of the challenge. So, that being writ, I think your score suffered because of voters treating this as DNMC.
But, also keep in mind that you got 3 votes of 10, so you struck a cord with some voters.