A wolf-dog was captured on video apparently mourning the death of his owner's grandmother, Gladys, as he visited her grave.
A video of Wiley whimpering as he laid down on Gladys' grave was uploaded to YouTube by user SarahVarley13 on April 14.
In the short clip, the owner says "We miss her, too," as she pets the dog.
The video has been seen more than 350,000 times.
A website for the Lockwood Animal Rescue Center in Ventura County, Calif. also uploaded the video. The shelter specializes in caring for wolf-dogs and horses.
The website said Gladys was a "family member, and a supporter" of the center.
Many people have commented on the video, saying Wiley is not actually crying but is instead reverse sneezing.
The owner replied and said, "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 anthropomorphizing his actions but its how I'm choosing to deal with loss…"
Some have also said the dog is dying.
"I promise he is not," the owner said. "We have a veterinarian on staff at the sanctuary and Wiley is just fine."
Sarahvarley13 wrote that Wiley is one of a number of "service wolves" that help veterans returning from war deal with PTSD. The wolves give therapy through LARC and another program called Warriors and Wolves.