We currently lost one of our dogs quite sudden, she was a 11 year sheppard/lab. We also have a yorki/pom/poo who is only 2 1/2 years old. Since our old dog died, our other dog has reverted back to peeing and pooping in the house. When our other dog was alive they went outside together and this dog just followed and learned from the other, but since gone it's like he does not know what to do anymore. I have tried to go outside with him, play with him, run with him and he just stands there looking at me. It is really frustrating and I'm not sure what to do anymore.