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The image above looks like a medieval mace: a tubular structure with nasty-looking spikes. But these are no carefully crafted human weapons.
Instead, they are the penis spines of a bat. For some bats, sex is quite literally a thorny business.
The question is, why do some bats have penile spines? What are they for, and why do their sizes and shapes vary so much? Based on what we know from other species with similarly spiky penises, there are several possibilities.
Perhaps the spines remove the sperm of rival males, or hold a pair of copulating bats together while they mate in mid-air. Or maybe they really are a kind of weapon: conceivably they evolved to damage the female's genitals, preventing her from mating with additional males. The passage about sex life of bats. U should learn these informations for ur general cultural development. And this is a photo of pennis belonging to a bat. http://ichef.bbci.co.uk/w...ive/p0/32/6q/p0326qn8.jpg