Max our 7 year old boxer really slowed down on eating about 2 1/2 weeks ago, we took him to the vet last saturday and they said to try antibiotics and another medicine, he was down 10 pounds from sept, he just about completely stopped eating since sat and I had to stick the pills down his throat, he also vomited a couple times, took him back today and left him, he lost 6 more pounds and xrays show a mass either on or in his stomach, surgery in the morning to see what it is, I told them if it was a tumor too big to remove don't wake him up, I did not want to watch him starve to death slowly, tough call but I am not giving up hope. Maybe he ate a tennis ball or maybe he ate our cat which has been missing lately!