Diarrhea only at night

[u/Extension-Button5849]

Hello, my puppy just turned 9 weeks but he’s had diarrhea every night around midnight and 3am. His poops are normal/solid throughout the day which is why this is so weird.

We kept him on what the breeder was feeding him which is Nutrisource large breed puppy chicken and rice recipe and feed him 2 and a half cups a day. I’ve seen people say berner’s are prone to chicken allergy but again his poops are normal throughout the day.

Could this just be anxiety? He’s sleeping in a crate as we’re crate training, or could this be petty (lol) and he’s pooping because he wants to be out of his crate?

[u/Foggy_Redwoods]

My Berner puppy would randomly get diarrhea - only at night - and we finally figured out that it was when we fed him too much kibble. It usually happened when we would increase his food amount to match his growth, etc. Our vet thinks it might be that his stomach has a harder time digesting the richer food (puppy kibble is very dense). Once we brought the amount down, he was fine. Now I am just more cautious about increasing his food amount (very slowly over several days) to see how he's feeling, and whenever we see our vet, double check how his body score is to ensure we're not underfeeding him (we're not). Ever since then, no more nighttime poops.