Hello I am Dr. Joey. Thanks for trusting me to help you and your pet today. I am a licensed veterinarian with over 15 years of experience. I look forward to working with you.
This does sound highly concerning, given the length of time he has refused to eat. Good job trying to offer him a variety of different foods. This is certainly a first step. What testing did your veterinarian do? At a minimum with this length of time of not eating well, if at all, and the weight loss he would need a wellness lab work screen that might include a CBC, chemistry profile with electrolytes, urine check and stool check. That can help us to know if he is having any organ issues (liver, kidney), pancreatitis, electrolyte problem, profound infection, etc.
If lab work was done, and was normal, then the next step that we really must do is to take an xray of his abdomen to know if he has some sort of intestinal blockage such as from swallowing an unusual item. Even our little dogs do this from time to time.
If this looks excellent (xrays and lab work), then the next step is to start him on medication to stimluate his appetite such as mirtazepine (prescription product your vet would have to prescribe) and/or some antinausea medications. If he was my patient I might recommend you purchase famotidine from your local people pharmacy and use the 10mg tab and give one-half every 12 hours -- this helps with some level of nausea and sour stomach, and has no bad side effects.
For food, it not already tried, try offering white rice mixed with a protein (such as boiled chicken breast or cottage cheese).
You appear to be unavailable for a live chat or we are having a difficult time connecting. I am at a point I need to know what questions you have. We can continue our dialog in this setting.
I hope that the information I provided has been helpful.
Please remember to select REPLY TO EXPERT if for any reason you need further clarification, have more questions, or were expecting a different type of answer.
My goal is to provide the best answer possible prior to you leaving a feedback rating.
If you received all the information you needed, then kindly submit a rating.