What visual feature distinguishes the Cape Ground Squirrel, Xerus inauris, from Xerus erythropus in the field?
The presence of a distinct, prominent white stripe running laterally along each side of its body
The primary distinguishing field marker between the Cape Ground Squirrel (*Xerus inauris*) and other common species like *Xerus erythropus* is the distinct lateral stripe. *Xerus inauris* possesses a prominent white stripe running down each side, contrasting sharply with its darker flanks, which are generally described as pale greyish-brown or tawny. In contrast, species such as *Xerus erythropus* and *Xerus rutilus* lack this bold marking and are often referred to as unstriped ground squirrels, typically exhibiting a more uniform reddish-brown or rufous coloration across their back. While coat tone can vary due to soil mineral content, the presence or absence of this white stripe is highlighted as a more reliable indicator for differentiation in wild observation.
