We all love man's best friend here at GuySpeed. But we love 'em even more when they're ruining family pictures by letting out their business in the background.

We're not sure what impresses us more, the fact that the photographers didn't notice that there were dogs in the backgrounds of these pictures, answering the call of nature, or the absolute perfect timing necessary to capture these momentous occasions on film. Either way, these 15 pictures being ruined by dogs who just don't give a crap (or do, actually), are hilarious. Let that be a lesson to anyone with a dog who wants to immortalize a moment on camera: always check for a dog behind you.