Using bulls as transport seems to have happened in other parts of Africa too; here from South Africa in 1819: Eine Hottentottin
The photo from the early 20th century of the Messiria in particular and Baggara in general in the southern Sahel who travel by oxen.
(The Way Horsemen are)(d1361) From Spain
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Taken from the French translation : La parure des cavaliers
Also called : Ibn Hudhayl al-Andalusi
El Masudy says that the inhabitants of Upper Egypt which borders the Abyssinians, cross wild (female)donkeys with bulls, and cows with (male) donkeys, and that in the land of the Zenj, there is a variety of cows that one rides for war, with saddles and everything, and they run like horses.
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Taken from the French translation : La parure des cavaliers
Also called : Ibn Hudhayl al-Andalusi
El Masudy says that the inhabitants of Upper Egypt which borders the Abyssinians, cross wild (female)donkeys with bulls, and cows with (male) donkeys, and that in the land of the Zenj, there is a variety of cows that one rides for war, with saddles and everything, and they run like horses.