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Bone(r) of contention

A great piece by Carl Zimmer on his blog The Loom about the penis bone — or baculum — of mammals. Why is it there, and why is it shaped the way it is (like a 60-cm-club in the walrus, and like a can-opener of sorts in some squirrels), and why do chimps have one, and we don’t. Of course, bacula also feature, here and there, in Nature’s Nether Regions.

(PS: a few students of mine, Tamara Hoogenboom, Rick van Beek, and Paulien de Jong, had a better look at symmetric and asymmetric penis bones in our collection.)

Big stick ideology: my student Tamara Hoogenboom and a walrus baculum from the collection of Naturalis Biodiversity Center

Big stick ideology: my student Tamara Hoogenboom and a walrus baculum from the collection of Naturalis Biodiversity Center

One thought on “Bone(r) of contention

  1. Pingback: Prehistoric Spanish bears’ sex life discovery | Dear Kitty. Some blog

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