 Studies and breeding programs have been undertaken with the hope of arresting this decline, with a focus on ensuring zebras bred in captivity are equipped for life in the wild, and that non-domesticated populations are able to freely migrate.A problem faced by some of these programs is that captive Chapman's zebra populations experience higher incidences of diagnosed diseases that non-domesticated populations due to the fact that they live longer, and so are less likely to die in the wild from predation or a lack of food or water.Chapman's zebras are single-hoofed mammals that are a part of the odd-toed ungulate order.