My girlfriend and I just got a new puppy a few weeks ago (a lab/pit mix). She is 13 weeks now, and has up until recently shown great promise with potty training. She'll bark near the door to let us know when it's time, or simply stand by it and look at us, waiting. We give her lots of praise when she does this, and again after she does the deed outside.
She had a few accidents in the beginning, but for the most part has really made a lot of good progress with the house training.
Here is my dilemma: A few days ago, she jumped on the couch and peed everywhere. And today, while I was in the process of making the bed, she peed on the linens that were on the floor.
Is she marking her territory? Or what? How do I deal with her when she makes these mistakes? Is there any way to prevent this from happening without making her life miserable?