Here's why:
* Size: African elephants are the largest land mammals, and their ears are proportionally larger than those of Asian elephants.
* Function: The large ears of African elephants help them to regulate their body temperature in hot climates. They act like giant radiators, dissipating heat through their extensive surface area.
While both African and Asian elephants have large ears, those of African elephants are significantly larger and play a more important role in thermoregulation.