Humans are the exception: New research reveals surprising brain size trends across mammals

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Humans are the exception: New research reveals surprising brain size trends across mammals

A recent study has upended a long-held assumption in biology: the idea that brain size increases proportionally with body size across all animals. While this relationship has been widely accepted for over a century, new research published in Nature Ecology and Evolution reveals that it is not as straightforward as once believed. The study shows that larger animals do not necessarily have proportionally larger brains, with humans being a signific…