Hello everbody. This is my first post about this issue i am having with my dog. He has this issue where he snaps his head backwards to the left and right attempting to bite something on his back. I have searched high and low on the internet and have found absolutely nothing like it anywhere. Literally, i have searched everywhere and found nothing. Please if you have seen anything like this before i could desperately use some help. It is starting to completely impact his quality of life.