[Help] Housebroken rescue dog is peeing in our apartment, having other behavioral issues

We adopted two dogs yesterday (both shih tzus). One has been great so far. Well behaved, listens to commands ,etc.The other is having some issues. We've had him for only a day so I'm not sure if this is him getting used to our space, but a couple of behavioral issues with him:He's peeing inside - happened three times already. He seems to do it in a "mark your territory" type of behavior. With the exception of one time, barely anything came out. He also is territorial. If he's on one of our laps - if hte other comes out he growls and tries to attack her. We've tried to correct the behavior by putting him down, reprimanding him, and ignoring him for a few.The problem with the bathroom issue is that we live on the 12th floor of an apartment issue and can't just bring him outside as he starts to pee.Any help would be appreciated! via /r/dogs http://ift.tt/2rHsxjz