What key physical distinction relates to the fur density of Grauer's Gorillas compared to Mountain Gorillas?
Answer
Their fur is generally shorter and less dense
A notable physical adaptation differentiating the Eastern Lowland Gorilla from the Mountain Gorilla lies in their pelage. The Eastern Lowland Gorillas possess fur that is generally shorter and possesses less density compared to the thicker coats seen on the Mountain Gorillas. This difference is interpreted as an adaptation suited to the warmer climatic conditions prevalent in the lower-altitude tropical rainforests and swamp forests where Grauer's Gorillas often spend time, contrasting with the colder environment of the higher-elevation Mountain Gorillas.

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