I have three dogs. They are all on the same heartworm med, Sentinel, and they all received it today. Two of the dogs vomited withing an hour of each other tonight. Is there such thing as canine stomach flu? Is it contagious to humans/other dogs? Any advice is greatly appreciated
And the one dog is older, we thought he just puked because of the Glucosamine in his meds for arthritis ebcause he does that frequently, but then the other one puked.
Not trying to be gross, but the food looked undigested