Our Rottie pup was on Wellness Core from the breeder, it wasn’t long before his poop went from soft to runny. We did all the tests and the anti diarreah medicine. Never got better, so I switched to TOTW (grain free) and he didn’t do well on that either. Since he was not retaining much of his food I was concerned with his growth (body&brain) so I reluctantly took the vet advice and put him on prescription diet for 3 weeks and then gradually switched to Pro Plan Focus Lg Breed as it was the same brand as the prescription diet and was the most similar in ingredients. Best poop ever and he has been growing at a normal rate! Now that he is stabilized I will be doing a gradual switch to a better quality food, one with good grains and lower in fat/protein. Wellness & TOTW were just too rich. I did a lot of research and am going with one of the following: Annamaet Encore All Life, Canidae All Stage, Horizon Complete or Nutro Ultra. Still deciding.
