Keyo, a rare Grevy’s zebra foal, was born on Saturday at the Denver Zoo in Colorado. Keyo was on his feet within an hour. Only about 2,000 Grevy’s zebras are left in the wild in Africa. As the largest wild equine species, Grevy’s can be distinguished from plains or mountain zebras by their longer legs, more narrow stripes, white, stripeless underbelly and large rounded ears. Keyo is the first zebra born in Denver in ten years. (Denver Zoo photo)