Thanks for the responses!
We feed at about 6:45am and 6pm every day. They were on Merrick lamb and rice, but he is now on I/D canned food. It occurs about 4 hours after dinner, but again, not every night. And once it starts, he will do it during the day and all night as well, until he gets randomly better. We started a calendar now so I am keeping track of food, exercise and gulping and vomiting episodes to find a pattern.
I will try your suggestions for sure, thanks!
And I do have a video on my phone for our next vet visit, but I am first trying a strict week of the canned food with water to make it soupy, and nothing else. We will see how it goes.
