How did the substantial size and structure of Arsinoitherium affect its movement on firm ground?
Answer
It implied a slow gait due to substantial size and relatively short legs
Arsinoitherium was substantial in size, possessing short, stout limbs necessary to support its great mass, coupled with a wide stance. This combination of features strongly implied that its locomotion on dry, firm ground would have been slow. The heavy body combined with shorter legs suggests that maintaining speed on terrestrial surfaces was difficult, which in turn fueled speculation that access to water might have been a necessity rather than just a preference, possibly for thermal regulation or easier movement than its slow gait on dry land allowed.

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