Hi, Ted – not so sure that indigenous is the right word for the mustang. Feral is probably better. There are similarly “wild” horses in Australia (brumbies) and in Namibia.
The Namibian horses inhabit a desert region on the western side of the country, and are descended from a herd kept by a German settler about a century ago. They are very hardy.
It is also highly likely that the brumbies got to Australia by way of South Africa, since the First Fleet called in at Cape Town and took on Cape horses which were then used in the Botany Bay settlement.
The Cape horses were the product of importation from Europe, but they also are a hardy breed, since they have developed a measure of immunity to African horse sickness.
And during the British period at the Cape, many more horses were imported. An early governor, Lord Charles Somerset, was the founder of the Cape Jockey Club.
The Indian Army purchased a good many “Caper” horses, but then began preferring horses from New South Wales, which were called “Walers”.
Among the hardy horses found in Southern Africa today are the Lesotho ponies, which are small because of the harsh conditions in the mountains of that kingdom. Visitors to Lesotho almost invariably come across at least one lone rider or party of riders, usually male and wearing the characteristic conical Basotho hat plus a blanket over the shoulders.
With regard to zebras, there are a number of species.
The Cape mountain zebra is common in the Western and Eastern Cape, while Burchell’s zebra is found in the Kruger National Park. Hartmann’s mountain zebra is native to Namibia, and (oddly enough) has become part of the fauna of the Cape of Good Hope Nature Reserve, at the southern end of the Cape Peninsula. Grévy’s zebra is native to northern Kenya and Ethiopia, but is an endangered species.
The legendary quagga is believed to have been a genetic variant of the Cape mountain zebra, and attempts are being made to breed it again from that stock.
While writing this note I had a look at Wikipedia and found a picture captioned: “Lord Rothschild with his famed zebra carriage (sp. Equus quagga burchellii), which he frequently drove through London.”
And of course there is a pair of zebra in the coat of arms of Botswana – I suspect your forcene zebra has been borrowed from that device.
Regards,
Mike