What is the greatest recorded length for the anterior horn in exceptional female white rhinoceros specimens?
Answer
Up to 166 cm (65 inches)
The white rhino possesses two horns, with the anterior (front) horn typically being the longer and more prominent structure. While the posterior horn usually reaches about 55 cm (22 inches), the front horn exhibits greater variation. The text notes that in regular individuals, this main horn might measure 60 cm (24 inches). However, truly exceptional specimens have been recorded, particularly among females, reaching extraordinary lengths of up to 166 cm, which translates to 65 inches. These horns are continuously growing structures, capable of gaining up to three inches of length annually.

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