My friend brought over her new puppy, an 8 week Boxer puppy to meet my 2 year old cairn terrier. The two got on good, started playing and smelling each other right away - but then my cairn peed on the little boxer!!! I didn't know what to do - he's fully housetrained and I wasw sooo embarrassed! lol Anyone have any ideas of why he did this?? Oh to be inside the head of a dog for a day!