My dog is an old Schnauzer, 15 years old to be specific. A week ago we went to the vet because of a relatively simple respiratory problem he had, and the vet injected anti-inflammatory and analgesic drugs, and since then my dog hasn't eaten absolutely anything and everything we try results in him having diarrhea or vomiting.
We asked the vet and he said we can try with electrolyte water and soft food, like baby food or boiled chicken with rice, until we have encouraged him to eat. So we went to a second vet, for other opinion, and she said that the dog still has respiratory problems - she prescribed Amoxin and soft diet, but nothing improved in terms of dog's appetite.
I'm desperate, what can I do to help my dog? I need to give him the nutrients he needs. He had been eating relatively well for his age until that day. I'm not sure what happened. Aside, he has been walking a lot in the recent days.
Thank you and sorry for my bad English.