Then I have another one for you: When mating, the male spider Nephilengys malabarensis snaps off his penis and leaves it inside the female. That way he can fend off other males and also is better able to defend himself against the female that tries to eat him: <a href="http:&#x2F;&#x2F;phenomena.nationalgeographic.com&#x2F;2012&#x2F;06&#x2F;12&#x2F;male-spider-castrates-himself-and-gets-more-stamina&#x2F;" rel="nofollow">http:&#x2F;&#x2F;phenomena.nationalgeographic.com&#x2F;2012&#x2F;06&#x2F;12&#x2F;male-spid...</a><p>Nature is absolutely fascinating (and makes me happy I&#x27;m a human).