Lord Morton's mare
Lord Morton’s mare was an equid hybrid and once an often-noticed example in the history of evolutionary theory. In 1820, George Douglas, 16th Earl of Morton, F.R.S., reported to the President of the Royal Society that, being desirous of domesticating the quagga (a now extinct subspecies of the plains zebra), he had bred an Arabian chestnut mare with a quagga stallion and that, subsequently, the same mare was bred with a black stallion and Lord Morton found that the offspring had strange stripes in the legs like the quagga.