(WILDLIFE/FUNNY ANIMAL VIDEOS) In this funny video clip, watch as an inexplicably irate ostrich chases a couple of bikers downhill. The ostrich is the world’s largest bird, and while they cannot fly, it comes as no surprise they can cover a lot of ground in a single stride. In fact, they can run up to 43 miles an hour–a lesson these two cyclists will not forget. While they try to outrace the bird, ostriches can run faster “than Lance Armstrong in a time trial,” according to experts. — Global Animal