My little hound dog mix is 10 years old. She is going blind due to a genetic condition and has been diagnosed with colitis. She has been retching, but not being sick, on and off for some weeks now. It sounds a bit like a goose honk. Vet diagnosed colitis and has put her on a low fat diet. She seems a little bit better and isn't retching as much, but is still doing so every now and again.
A bit of googling (I know!) suggested kennel cough but she is up to date with her vaccinations or twisted gut but she doesn't have the hard tummy that goes with that. I just don't feel like colitis is the right diagnosis but I don't know what!!
Any ideas what it might be and how I can help her? She is such a good girl, she never complains. TIA 