What specialized adaptation allows the white rhino to function as one of the world's largest pure grazers?
Answer
A remarkably broad, square, and straight upper lip
The defining feature dictating the white rhinoceros's feeding strategy is its mouth structure, specifically its remarkably broad, square, and straight upper lip. This adaptation is perfectly designed for grazing, enabling the animal to crop wide swaths of short grasses efficiently as it moves with its head lowered. This efficient cropping is further aided by a strip of cartilage located inside these broad lips, which provides the necessary support and flexibility to pluck grass that is only an inch or two tall, solidifying its classification as a pure grazer.

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