Cocker Spaniel strange behavior.
I have a 2 and 1/2 year old cocker spaniel. He was well trained when he first got home, when he was about 2 months old. He learned to "go" in a newspaper that we have for him in a corner of the apartment. Lately he´s been having problems with this. He still goes on the newspaper, but whenever he feels like it, he´s pooping or peeing everywhere, on the floor, on the carpet, even on my bed. I don't know what to do!! I live in an apartment so I can't just let him out whenever he wants to. What can I do??