Quokkas , adorable and, most notably, remarkably photogenic animals, roam across the southwestern corner of Australia. With its perpetual grin and friendly demeanour, this small marsupial, about the ...

Dubbed the world’s happiest animal thanks to its constant smile like expression and friendly nature. Always wagging, loyal ...

Known as "the world’s happiest animal" because of its permanent smile. Native to Australia, this small marsupial is friendly and photogenic. Dolphins are intelligent and playful creatures. Their ...

but nothing topped when tennis' biggest stars channeled the "happiest mammal on planet." Players often visit Australia's animal sanctuaries each year during their trip Down Under, and come home ...