(NEWSCIENTIST) — First climate change, now penile fracture – polar bears have got it pretty rough. Chemical pollutants may be reducing the density of the bears' penis bones, putting them at risk of breaking this most intimate part of their anatomy.
Various mammals, though not humans, have a penis bone, also known as penile bone or baculum. Its exact function is unclear: it could be just a by-product of evolution, or it may help support the penis or stimulate the female during mating.
Christian Sonne at Aarhus University, Denmark, and colleagues had previously shown that polar bears with high levels of pollutants called organohalogens in their bodies had both smaller testes and a smaller penis bone.
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