Just click the green flag. If you don't want to sketch, or you got frustrated, try listening to the nature sounds/wolf sounds. Ik it isn't enough time to draw the animals by just looking at it, as it changes but i would suggest screenshotting the animal you would like to draw. Then you will have it forever. Unless you delete it or something like that.
Just to let you know it's on repeat if you didn't get a chance to screenshot it the first round (*^▽^*)