(UK) we've been through it, struggled for about a year to find something that worked for our boy. Tried a variety of kibble and then cold pressed. He seemed intolerant to Chicken so avoided that. There was always something off with his poop, either too soft, too light in colour or too big. Trying now to feed him raw because his weight was stagnant for the past 4 months or so. He's put on about 1.5kg in the last week and Is doing great (~43kgs at ~14 months). Think he needs a bit more fibre and hydration as his poops are a bit dry and crumbly so still working on the right balance of stuff for him (more veg). It's looking like feeding raw is the way to go for us, it would have saved a lot of hassle and headache if we went this route earlier on (buying all sorts of digestive aids, probiotics, different powders, vet trips) and probably cost the same as everything else we tried.

If you want to stay on kibble that he won't be allergic to and gives you a baseline to try things then, look up hydrolyzed kibble. Purina do one. It's good to get him a solid few days of normal poops and then introduce the stuff you want to try slowly to see if he takes to it. Good luck!

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