My German shep pees on my girlfriends Puggle all the time...I laugh my girlfriend gets pissed but her dog doesn't seem to dislike it.if it was me id have had 40 dogs pissing at the same time. lol i saw the funniest shit yesterday my friends dog was in our yard pissing on a tree. left leg hiked up. well my dog comes facing opposite way right next to him, hikes his leg up and pisses on my friends dogs leg that is using as support lol "ur peeing on a tree, fuck it ill pee on ur leg that ur uisng to stand up with"