Crawshay's Zebra is a sub-species of the more common Burchill's Zebra, and is only found in Zambia, around the Luangwa Valley area.
The markings are closer together, giving a more "graphic" appearance, and it lacks the brown shadow stripes often seen between the black stripes of the Burchill's Zebra. Also, the white stripes in the mane tend to be more prominent.
In V4 and V5 I've added zebras from Kenya and Tanzania to show the difference.
(The zebra in V4 escaped!)