This is a short discussion about research on polar bear penis bones, regarding a new paper that sent several of the Internet’s most juvenile science headline writers off the deep end.1
Short quiz first. Above are the penis bones (each called a baculum, plural bacula) of three marine mammals – one is from a bearded seal, one from a polar bear and another from a Steller sea lion. Which one do you think is the polar bear? Answer below.
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