As has already been said, bully breeds are very prone to gas, and particularly noxious gas at that. Sometimes it comes from the dog scavenging something nasty out in the yard and eating it. Sometimes it can be a sudden sensitivity to a specific food, such as corn or wheat, and so can be fixed by feeding sensitive stomach rated food.
In addition to diet changes, here are few natural remedies to try:
1. Peppermint – tear up a couple of leaves of this herb into their food.
2. Nux Vomica – this is a homeopathic remedy and should be given away from food.
3. Enzymes – these help to breakdown undigested food.
4. Probiotics – flora found in the digestive system; these “good guys” help knock out the “bad guys.” Look for the non-dairy variety.
5. Massage – relax your dog onto his back and gently massage the midline of the stomach, and yes, it does help to coo and talk calmly.
Illness or parasite infection can also cause gas. You might want your vet to check the dog over and suggest possible treatmen ts.