Horse outward similarity is an unreliable measure of relatedness. Besides the horse, there are six other species of genus "Equus" in the Equidae family. These are the ass or donkey, "Equus asinus"; the mountain zebra, "Equus zebra"; plains zebra, "Equus quagga"; Grévy's zebra, "Equus grevyi"; the kiang, "Equus kiang"; and the onager, "Equus hemionus". Horses can crossbreed with other members of their genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse,
George Africanus George Africanus George John Scipio Africanus (c. 1763 – 19 May 1834) was a West African former slave who became a successful entrepreneur in Nottingham. The early life of George Africanus is obscure. Calculating his birth year from his burial certificate, he was probably born in 1763. His obituary in the "Nottingham Review" of 30 May 1834 states that he was born in a village in Sierra Leone, which became a British colony in 1787. It is believed that George arrived in England in early 1766. On 31 March 1766, he was baptised George John Scipio Africanus, and described as