What animal famously sprays sand into the air to hide from predators?

Octopus

Who was forced by Zeus to repeatedly roll a rock uphill in Tartarus? What is the name of the kingdom where Princess Fiona is from in the "Shrek" movies? Which animal, despite weighing up to 600 pounds, climbs trees proficiently? What is the term for completing a marathon in under two hours? In what European country do people celebrate the tradition of the Christmas Witch, Frau Perchta?