Diehl, 46, suffers from sudden seizures and Osiris helps keep him safe, alerting him before they happen, he said.
“He means everything to me,” he said. “He protects me from everything.”
Now 14 years old, Osiris needs more veterinary care. But the bills aren’t something that Diehl, a former commercial diver, can afford.
As one of hundreds living on the riverbed of the Santa Ana River Trail, Diehl was among 60 people and their pets who took advantage of free veterinary services offered on Sunday, July 30.
The services were offered by two groups, the Healthcare Emergency Animal Rescue Team out of Yorba Linda run by veterinarians Debra and Dr. Todd Kopit, and  Dr. Mark Malo, vice president of the  Animal Health Foundation, a nonprofit that is a charitable wing of the Southern California Veterinary Medical Association.
The veterinarians did wellness checks, vaccinations, de-worming and parasite treatment.
“We launched this program because we know there are many services …