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 shark are unclear; one report places them at depths greater than , while another report from India suggests they inhabit shallower water than adults. The stripes of the juveniles may have an anti-predator function, making each individual in a group harder to target. Males attain sexual maturity at long, and females at long. Their lifespan has been estimated to be 25–30 years in the wild. There have been two reports of female zebra sharks producing young asexually. An additional study has observed parthenogenesis in females regardless of sexual history. Docile and slow-moving, zebra sharks are not dangerous to humans and can