Zebra black and white at birth. Plains and mountain zebra foals are protected by their mothers, as well as the head stallion and the other mares in their group. Grévy's zebra foals have only their mother as a regular protector, since, as noted above, Grévy's zebra groups often disband after a few months. Attempts have been made to train zebras for riding, since they have better resistance than horses to African diseases. While occasionally successful, most of these attempts failed due to the zebra's more unpredictable nature and tendency to panic under stress. For this reason, zebra-mules or zebroids (crosses between
Zebra crossing and leave. Their widely used nickname arose because of the warning sign they hold up as they stop traffic. It's a large round disc on a long pole and thus resembles a giant lollipop, although they were originally of a square design. In Germany, Scandinavia, and most other European countries, pedestrians have right of way if they are still on the curb but about to enter the zebra crossing. In North America, zebra crossings are almost exclusively called (marked) crosswalks and often do not incorporate stripes. In some areas, marked crosswalks are the only places where it is legal to