Foreskin Support

This is just my rambling and off teh wall thinking but what is the difference REALLY in an animal's foreskin and a human's foreskin??

This was branched off because me and my friend's were talking about that movie changeling and how the little boy in the movie way circ'ed and my friend made a comment how she's getting her son circ'ed (she's 21, isn't preggo or dating or any of that and doesn't know any better, just another brain washed American, don't judge her too harshly ;-)) that not doing it is "not cool" and i started thinking you would do that do your own flesh and blood but you wouldn't even think about doing it to your dog (for instance) i mean its just an animal ( don't get me wrong here, im not saying we should circ our animals, LOL!! just saying she would do it to a human but not an animal, maybe im not making sense?) so then a started wondering....really what is the differance between a human foreskin and an animal's foreskin?? I mean male pigs live in mud and roll around in their own fece's and we never hear about an animal having a foreskin problem.....no matter how dirty or filthy of an enviornment they might live in.

Its late and im rambling.....hopefully someone understand's what the heck im trying to talk about.