Submitted by placidbeans t3_11x3fm3 in askscience
welshmanec2 t1_jd4nc58 wrote
Reply to comment by Greyswandir in Animals with more neurons outside the brain than inside? by placidbeans
Also tangentially related, an octopus brain is toroidal (donut shaped) and its guy passes right through the hole in the middle of it.
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