Reuben, a playful 10-month-old cockapoo, has just felt the bitter sting of rejection for the first time. According to his owner, Sam Clarke, Reuben has a knack for getting even the grumpiest of dogs in the mood for play—but he’s finally met a canine that won’t buy what he’s selling. Clarke captured this hilarious video of Reuben’s stupefied response to an older dog that’s no mood for his antics. Credit: Youtube/Sam Clarke