We have a 2 1/2 yr old lab. He’s been potty trained for well over a year now. 7 months ago, we got a papillon puppy. She’s been significantly more difficult to train, and still has “accidents”. This morning, I found that my lab had an “accident”. Has anyone hear of an older dog acting out or his training being “reversed” by the bad behavior of a new puppy? The puppy has also been getting a lot of attention lately – vet visits, that sort of thing… so could he be jealous and acting out?