Training treats for Bull Terriers with sensitive digestion

The best training treats are pea-sized, smelly, and high in protein — soft enough to eat in one gulp so your dog stays focused rather than stopping to chew. They need to be more exciting than their regular food, which is the whole point. For a dog with a sensitive stomach, that actually narrows things down usefully: you want a single-protein treat with no fillers, grains, or artificial additives. Tell me about your Bull Terrier — how much do they weigh, what are you training them on, and what protein do they already eat in their main diet?

Good — salmon is already established as a safe protein for him, so that's exactly what I'd build on. You want the training treat to be a different texture and smell from his main food so it reads as more exciting, but staying within that same protein keeps his gut settled. What's his current treat situation — has he reacted badly to anything specific before, or is it more that you've just never found something that agrees with him?

That reaction to soft treats with additives is very common in Bull Terriers — they can be sensitive to glycerin, artificial preservatives, and cheap meat derivatives. The fact that he's fine with plain cooked fish tells you a lot: it's not the protein, it's the junk that comes with it. I'd go with Forthglade Natural Treats 100% Natural Fish Bites. They're made from a single ingredient — dried fish — no additives, no grain, nothing else. They're naturally smelly, which is exactly what you need for recall work outdoors, and they're small enough to use repeatedly without loading him up. The texture is firm enough not to be messy in your pocket but soft enough that he can eat one in a second and stay in the game. Stay well clear of treats with more than three or four ingredients on the label, and avoid anything listing 'meat and animal derivatives' — that vagueness is usually what causes the stomach trouble.

For a 28kg dog, I'd comfortably use 20 to 30 pieces in a 15-minute session without concern — they're small and single-ingredient, so there's nothing in them to accumulate and cause trouble. Just count them as part of his daily food intake; if you're doing a lot of training, take a small amount out of his main meal that day. Start with a shorter session the first couple of times just to confirm he's tolerating them well, then you can train freely. The loose stool issue from before was almost certainly the additives, not the volume — these should be a completely different story.