Rock ants show a lefty bias when picking which way to turn in strange, dark places.
Brain hemispheres specialized for different functions were long thought to be a unique marvel of humankind, says Lesley Rogers of the University of New England in Armidale, Australia
Her discovery that chicks show lateralized behavior plus similar discoveries with rats and songbirds in the 1970s and early 1980s dented human pride at bit.
Now it seems that lateralized brain function is very common, regardless of the overall brain size,
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