Thanks, Pitgrrl... it actually hadn't occurred to me that not all raw would be the same. Our dogs do seem to have similar issues, just that mine expresses it out the front end and yours seem to prefer the back end, LOL - so I'm going to look into the bone percentages a bit more closely.
I took Tommy off the antacids a few weeks ago - they helped, but didn't totally stop the vomit, and I just can't see putting a 20 month old dog on chemicals for life that don't actually solve the problem anyway. I didn't realize that they could actually make it worse - thank you for pointing that out!
We use digestive enzymes, it's one of the few things that's ever made a difference for us, but I wonder if they're strong enough? Is there a brand that you recommend? I give him Prozyme, along with a dose of human acidophilus + bifidus probiotics.
Have you consulted with a homeopathic vet? I finally found a holistic vet here, but I'm a wee bit reluctant to call... their website has lots of really, REALLY alternative type stuff (animal communicators, magnetic forces type of stuff) that is a bit further out there than I think I believe. I might still call to see if I can get a consult for diet and herbal remedies, etc. Apparently they're also trained in traditional chinese medicine. I guess I'd just have to kind of make it clear how far I'm willing to go - traditional chinese medicine, yes... herbs/roots/etc, yes... acupuncture/diet changes/supplements, yes... communicating telepathically with my pet, umm, that would be a no.
(Quite frankly, I'm not sure I'd want to know what he would say to a communicator, anyway - I'm pretty sure it would be something like 'yeah, I growl when they pick me up cuz I just don't like it. Quit waking me up when I want to nap. I growl when they dry my paws from the rain because I don't like it. Quit waking me up. I need more of the curly type toys. Quit waking me up. Vacuum more because I keep getting hair in my mouth when I spread my cookie crumbs around. And please, quit waking me up!'