About my dog's stinky (sulfur) burps....

For the past few weeks I have noticed that sometimes (about half the time) when my dog burps it smells very much like sulfur / methane / gaseous. I only feed her this really good organic high-octane (no pun intended, but it is kind of funny now that I noticed it) dry food. She's been on this for the past year or longer. She rarely gets people food, though sometimes my boyfriend will slip her a bite of something he's eating ~ though rarely. Otherwise all is totally normal ~ loves to play, walk, sleep, and intentionally annoy me. Very normal.

Any thoughts? Thanks in advance. Tweet