My GSD is 16 months old been having problems with diet first he is a very picky eater. Lately he is eating well weighs a little under 70lbs eats anywhere between 41/2 to 5 cups a day. He was eating mostly raw then he ate some turkey raw and developed diarrhea. Got him checked for parasites all was well got him back to being well but no longer on raw, then gave him some bone broth and he went back to diarrhea. Vet suggested royal canine low fat prescription got him on that with fortiflora also would give him a little over a pound of chicken breast boiled, he was doing great again and the last two days he again has diarrhea. This is a bit of a concern for me he is though very active eats well and very very playful. Tonight gave him a little pepto bismal on a recommendation. Any suggestions any thoughts on what is happening. He was great eater until he got bravecto at around 4 months for demodex. Any help will be greatly appreciated.