D.Y.K. Elephant brains outweigh others 19th July 2016 Editorial Team elephants, quick facts Elephant brains can weigh as much as 5 kgs, more than the brain of any other land animal. You may also like: Wristwatches were once regarded as female jeweller... Wristwatches were regarded as female jewellery (worn exclusively by women, while men used pocket-watches). World’s tallest unclimbed mountain The tallest unclimbed mountain on Earth is Gangkhar Puensum in Bhutan — 24,835 feet high. World’s largest honey bee Apis dorsata laboriosa, the Himalayan honey bee, is the world’s largest honey bee found only in the Himalayas.