Blossom my Golden Retriever is 5months old. Seems pretty healthy most days. She and my other Golden Retriever (female spayed) Petals who is 2 yrs old get along famously. At any rate, Blossom is on Science Diet puppy dry and has been since we got her from breeder. Somewhere around a month or so ago I noticed that just about 1-2xs per week Blossom was having bad diarrhea where it was shooting out of her. Off to the vet........got antibiotic it would work and she would seem better then all of a sudden relapse. We then realized that Blossom was tearing apart our carpet and thought perhaps she was eating and causing diarrhea. Removed her from any way of getting carpet.....still have problem. Now I thought maybe it was the Pet Tab vitamins I give her daily. Mind you my other dog has NO SYMPTOMS. I removed the vitamins.......still problem one or two times a week. Only take Blossom out front to do business that's it. Gave her bland diet of chicken and rice and it seemed to work then she would have bout of diarrhea again.Could it be her puppy food? Seems unlikely to me, as she seems to be able to tolerate it at some times. Also diarrhea seems to only come in the evenings. She is EXTREMELY ACTIVE even with the diarrhea and wants to eat and drink and play. Really worrying.