Wolf King is made by Solid Gold. Buffalo is definitely an acquired taste for dogs. But, like ramanth said...try the Solid Gold Seameal. Mike suggests
Solid Gold's D-zyme powder...it's specifically for digestive issues.

If he doesn't have an issue with beef, you could try Solid Gold's Mmillennia (yes it has 2 "m's" lol). Mike suggests mixing the Wolf King with the Mmillennia because the Wolf King may be too rich for him.

If you decide to switch foods completely, you could try Canidae Lamb and Rice. We have a dog that has digestive issues as well and he is on Pinnacle Duck and Potato....just another option. Mike carries 24 of the top 30 dog foods as rated by "Whole Dog Journal" and has 26 allergy formulas for dogs. If you would like to call him at the store, we are here 10-7 M-Th, 10-6 Friday, and 9-5 Saturday. The phone number is 260-483-0944 and his name again, is Mike.

Good luck and please keep us up to date.