My brother has a 13 year old lab mix and he brings it over to my mom's all the time. I brought my 2 dogs (a maltese and a yorkie). He came down the stairs and said "can't you train your dogs not to pee in the house!?" and put my dogs outside. I went upstairs and the pee spot was bigger than both of my dogs put together. IT WAS HUGE!!! I was so mad--I went downstairs and informed him that it had to be his dog (she is nervous around other dogs) because there is no way my dogs could have that much pee. He just didn't want to get blamed.