 Living in the very southern end of the plains zebra 's range , the quagga had a thick winter coat that moulted each year . Its skull was described as having a straight profile and a concave diastema , and as being relatively broad with a narrow occiput . Like other plains zebras , the quagga did not have a dewlap on its neck as the mountain zebra does . The 2004 morphological study found that the skeletal features of the southern Burchell 's zebra population and the quagga overlapped , and that they were impossible to distinguish . Some specimens also appeared to be intermediate between the two in striping , and individuals of the extant Burchell 's zebra population still exhibit limited striping . It can therefore be concluded that the two subspecies graded morphologically into each other . Today , some stuffed specimens of quaggas and southern Burchell 's zebra are so similar that they are impossible to definitely identify as either , since no location data was recorded . The female specimens used in the study were larger than the males on average . 
