Accidents Inside

Question
We adopted our lab/chow mix from a local shelter and have had him for a couple of months now.  We got him when he wasn't much older than 8 weeks.

We intended for him to be an outside dog, given his size and the ability for him to stay outside as our yard is fenced in.  However, we bring him in in the afternoons and during the night.

For the first month or so that we had him he was almost perfect with only one or two accidents.  He immediately took to using the bathroom outside.  However, these past few weeks he has started peeing in doted streams all over the bedroom.  Meaning he is walking and peeing at the same time.  

What would cause him to start peeing inside since he has not had any problems in months?  And how do we stop him besides scolding him when we catch him and praising him when he does it outside?

Answer
Have the vet check him for an infection, Lauren. If he's not actually stopping and peeing, but just walking around peeing instead, it's likely he has a bladder, urinary tract, or even a kidney infection.

Or, it could just be that he feels that he is 'too busy' to stop and do his business, but I would rule out a medical problem before I started scolding him and punishing him for it.