My 2 year old terrier mix has been house trained over a year and has recently started peeing and pooping in the house. Not only inside but on our beds. Last night I had just let him in and I put clean sheets on my daughter's bed ans he jumped up and peed. Today he did the same to my bed. He will be home with my other dog for up to 10 hours and not have an accident but when I am home and letting them out frequently he decides to do this. I have no idea how to stop this and would hate to crate him when I'm home. My other dog does not do this. Does anyone have any ideas?