Puppy Gets Stress Diarrhea After Groomer. Yes, just like people, dogs can get diarrhea from stress too. After the first week or two at their new home, puppy diarrhea is usually linked to an infection or another condition.
Unless, of course, you over fed your dog on treats. If she gets stressed out about being groomed it could be just a stress colitis. He always gets upset in the car and shakes, pants, whines, etc., but usually calms down once he realizes he's not going to the vet or groomers.