We have a 10 year old Chow/Retreiver mix who has always been a picky eater. Lately though, she'll go for days without eating, and she then vomits white foam or yellow liquid,...sometimes it's chunky and looks like it has specks of blood in it. She's also been having diahrea and has not been able to control her bowel movements in the house. She's lost a lot of weight, but somehow still seems to have energy and otherwise behaves normally. We took her to the vet, had blood tests and x-rays done and it all looks fine. The vet gave us meds to increase her appetite and to reduce nausea, and we've been giving her pepcid. Nothing has helped. He can't figure out what is wrong and the only thing he can think of to do is a sonogram. But there is no guarantee that he'll be able to tell us anything from the sonogram, and it's another $400 that we'd have to scrounge up. If I knew that the sonogram would give us some answers, I'd do it in a heartbeat. But I thought the x-rays would have and they showed nothing. Does anyone have any advice? Would the sonogram help? Any ideas on what could be going on with her? Help please, I don't want her to suffer and I'm getting tired of cleaning up vomit and poop all day!