Elephants have the largest brains of any land animal, and much of that capacity is devoted to memory. Older matriarchs lead their herds to distant water holes they may not have visited for years, guiding the family safely through droughts using knowledge stored over a lifetime.
That memory is social as well as spatial. Elephants recognise dozens of individuals by voice and scent, mourn their dead, and can remember humans and other elephants years after meeting them. Their intelligence and deep family bonds make them one of the most emotionally complex animals on Earth.
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