african black-&-white black-coats black-skin common-zebra equids fast grant’s-zebra grazers greyscale herbivores herbivorous herd herds individual mammal monochrome patterns plains-zebra social striped stripes ungulates unique white-fur white-stripes zebra bark black coats black skin Bray common zebra grant’s zebra plains zebra white fur white stripes blue cloud clouds copy copyspace sky space white erect-manes harems mohawk-like-manes stiff-manes do not cross red tape warning work 3D cross flag pole stars World Flags star