Hello, My bear bear did the same thing...we did everything and took him to the vet and all test came back normal..very frustrating!...
I tried everything!...I finely figured out that 1. he couldn't handle the rawhide chews 2. he has a very sensitive tummy so we put him on a sensitive stomach food and we used baby Imodium to help with the loose stools...3. he can NOT have any human food what so ever! It just messes with his digestion..It can be a saltine cracker and boom he will have loose stools that night...so u just need to watch your puppy and see what sets it off....If all the tests from the vet comes back normal then it is more then likely something with his diet...Imodium became my savior!...That and my carpet cleaner!
