So last week, the Facebook page "I Fucking Love Science" posted a picture of this horrible little creature, a mouth-infesting isopod called cymothoa exigua that crawls into the mouths of fish and eats their tongues. Seriously? Dick move, bro. I mean, look at its smug little face. Ugh. This awful parasite got me thinking about other members of the animal kingdom that are just unapologetic assholes. Click through to meet 9 more of them...