In 1696, a Dutch explorer took quokkas for giant rats. He named their island "the rat nest island", which is why it is called Rottnest today.

Australian Mammals · day 3 of 7
He thought they were giant rats and named the island after a rat nest.
They do not really smile; it is just how their face is built.
Spiky Acanthocarpus plants are their favourite daytime shelter.
Quokkas chew their cud, like cattle.
It was discovered in the Perth Hills, and its location is kept secret.
Two minutes a day, a new wild animal. Free on iPhone, Android and the web.
Feravox is a free wildlife app: 4,400+ species with real recorded sounds, 11 nature games and a free Daily 5, 1v1 quiz duels, conservation wins, and a safe Kids mode.