My really good friend just got a 3 month old Bichon Frise/Chiwawa mix. I have a 1 yr. old female doxie. She is potty trained to go on pads and outside, but she still has mistakes once in a while. My friend brought his dog over and the dog peed in my house 5 times (all in different places in the house on my carpet). I'm not use to male dogs and don't know what to expect. I can't have this puppy coming over to my house if he keeps peeing everywhere. Is it peeing because it's still a puppy or is it peeing to mark its territory? My house already smells. I can't have my dog seeing this behavior and peeing all over too. If it is territory, how do I tell my friend I can't have his dog come over when he's almost at my house every other day? Especially when he loves my dog like his own?