Let's be honest, everybody loves a good pet costume for Halloween [1]. And one veterinarian totally went above and beyond when it was time to dress up their Hungarian Puli dog, Kelli, for a pet parade in Kentucky a few years ago. So what did the lucky pooch go as? A mop, which is especially fitting given the breed's memorable coat. And judging by the fact that the costume's gone viral, it seems like it was definitely a fan favorite. Soak in all this goodness because this idea is a routine hit year after year.