Now, why would they do this? Well, sometimes when you're looking to design a man-made object and you aren't sure how to build it, it's best to mimic nature. As Nature News reports:
Understanding how animals shake themselves dry could help scientists to develop ways to rapidly shed water from man-made equipment. Hu hopes that devices can be engineered to incorporate elasticity similar to the all-important loose skin, and suggests that even the humble washing machine could learn a trick or two from the animal world about shedding water.
Nature also has a very excellent (read: adorable) video of animals shaking their fur to a soundtrack of Strauss's Blue Danube, which is a rather fitting musical choice.