Apparently the Quokka tastes very good, because in a short time it knobs the whole cracker away. In the end, it makes males again and looks at the camera with love, as if asking the tourist if he has any more delicacies left.
But as sweet and cute as the video is to watch: it is actually not good for the animals if they eat too much human food. This is not at all their usual diet and could possibly make the quokkas sick, as it says on the Rottnest Island website. The tourist in the movie was certainly not aware of this and the cute button instant look of the Quokka allowed him to share his crackers with him. Nevertheless, you should avoid it if possible or only feed quokkas with foods that belong to their natural diet, such as leaves, herbs and grasses.