In attempting to domesticate the quagga ? a zebra - like , south american member of the horse family ( now extinct ) ? he was forced to breed a male with a female arabian mare 他在试图驯养斑驴（一种马，产于南美，外型象斑马，现已绝迹）时，这匹雄性斑驴与一匹雌性阿拉伯母驴交配，杂交的结果正常。
2.
The resulting hybrid was predictable , but the singularity appeared when the arabian mare was subsequently mated with an arabian stallion : their offspring possessed colour and hair characteristics of the quagga 但后来怪事出现了，那匹阿拉伯母驴后来与一匹阿拉伯种马交配后，他们的后代拥有斑驴的肤色及毛发特征。
