Often called the happiest mammal on Earth, the quokka lives up to its appeal in this captivating picture. Approaching the photographer with their distinctive beaming smile that has made these marsupials internet sensations, this particular wild quokka shows the species' natural curiosity and fearlessness around people. The analogy to a relentless salesperson is exactly accurate since the quokka's resolute yet joyful attitude exactly reflects that unflinching hope of someone who won't accept no as an answer. With its head slightly slanted and eyes wide with expectation, the photographer caught the precise moment when the quokka's innate appeal was on full show, producing an image that's both funny and appealing. The way it keeps eye contact while apparently planning its next action to appeal some food from the camera reveals the amazing personality these animals have.