Sulfur burps

Hi.  About a year ago, my 9 year old husky/shepherd/wolf mutt regularly started having big burps that smell like sulfur.  Sometimes farts, too.  He had a sensitive stomach when young...I tried several different foods, and he has eaten Canidae for the last 7 years.  Perfect, since I developed celiac disease 3 yrs ago and Canidae is gluten-free!  He keeps my kitchen floor very clean, occasionally has plain popcorn thrown his way, and "picks" his own blueberries when we hike- otherwise no people food. He doesn't have vomitting or diarrhea.

Soooo....could his digestive system just be changing as he reaches "geriatrics"?  Could he have a parasite (all his bloodwork, stool tests, etc are normal)? Should I try another food, or is there something like "gas-x" for dogs?  Do you think it uncomfortable for him?  Could my dog have GERD?

All I know, is if it tastes half as bad as it smells, then he would love to try any ideas you have!

[Ghilly]

Sulfurous burps are a symptom of giardia.  Keep an eye on him.  In severe cases, giardia causes diarrhea, but since he doesn't have this, it might just be a case of having an overgrowth of giardia in his digestive tract, but not enough to make him sick.  Just to find out for sure, you could take him to the vet and have a fecal sample done.  If he has it, it will show up on a fecal.

Ghilly