The Vine comes from this video, uploaded to YouTube in April last year.
The dog's name is Wiley. The uploader, whose grandmother's grave the film was shot at, says:
"To add some clarification: I am not a vet so I can't say if he's reverse sneezing as some of you are stating. I can tell you that he has never done that before and hasn't done it since. I may be anthropomorphosizing his actions but it's how I'm choosing to deal with loss, so deal with it.
Wiley is a therapy wolf-dog who is used to help veterans returning from war with PTSD. He provides therapy and care through Lockwood Animal Rescue Center and a program called Warriors and Wolves. They have many other wolves/wolf dogs that they've rescued and they provide a truly unique and valuable service. If you'd like to check out more about Wiley and the work he does please visit this site."
Also, for those stating he is dying, I promise he's not. We have a veterinarian on staff at the sanctuary and Wiley is just fine. Peace and love peeps"