Roger Federer?s selfie with world?s happiest animal will light up your day

Smile! Tennis star Roger Federer posed for a selfie with the world's happiest animal, warming his fans? hearts with too much cuteness. On Thursday, Federer spent some adorable moments with quokkas at Australia's Rottnest Island. Native to the place, quokkas are considered as the world's happiest animals for their friendly nature. They have no natural predators on the island and approach humans with little fear. The 36-year-old champion is in Australia for the Hopman Cup tournament in Perth. ?Meet my new furry friend. So happy to be back down under #HappyQuokka @westernaustralia #justanotherdayinWA,? an excited Federer tweeted. Fans couldn?t take the cuteness overload. The quokkas seemed to like Federer, too. Here?s a video of their little fun meeting.