Australia. I went to the island last month. Love it!
World's happiest animal', the quokka, becomes the most popular tourist attraction at Western Australia's Rottnest Island. Part of the kangaroo and wallaby family, Quokka is the only native mammal on Rottnest, and it can't be found anywhere else on the earth except for a small colony on the mainland. Part of the kangaroo and wallaby family, Quokka is the only native mammal on Rottnest, and it can't be found anywhere else on the earth except for a small colony on the mainland.