Hi Dianna- What makes you think he doesn’t like the size of the kibble? Most of the kibbles that are for LBP’s are larger because the dogs mouth is larger. I feed Fromm Gold Large Breed Adult and the kibbles are a good size for my pitbull. The kibble is the same size for the Fromm Gold Large Breed Puppy. I can see Wellness being smaller because even though its appropriate for LBP’s its “marketed” for puppies in general which could also mean small breeds.
The Eukanuba LBP formula is actually not too bad and is correctly formulated for your Bull Mastiff pup, so if he is willing to eat that perhaps go back to what you know he likes.
My personal favorite LBP food is Fromm Gold LBP so its unfortunate that it didn’t work out for him.
