Please please don't take this negatively, but I would stay far away from Purina - like FAR FAR away. That is not a quality food. If you want something quality & grain free, that doesn't break the bank, try BLUE, Merrick, Natural Balance... the better quality food will highly improve him overall health wise. Alot of members including myself feed FROMMs, but they are higher priced for sure. We did Natural Balance & BLUE for years and were very happy. Choose grain free. You actually don't want bullies to put on too much weight, the heavier they are the harder on their joints, etc. When you switch (please do asap if possible), please transition. So do 3/4 his current kibble, and 1/4 of new, and slowly increase if you see no negative reactions. I'm curious to see if the food change helps the vomiting as well. Also, adding a teaspoon of plain greek yogurt.. do things slowly ... one at a time. So if you're switching foods, start that. Make sure he's adjusted, then add the yogurt... too much at once could also upset his belly.
He is the CUTEST!!! Also, as soon as he tears those toys apart, remove them immediately. They will swallow anything, and again obstruction... no bueno. Its better to always supervise while they have toys. Keep us updated!!! Please