Animal Testing is cruel. The animals didn't ASK to be tested on. As far as I go, test products and minor things on human guinea pigs (you know, the ones who actually volunteer for it, for money) and ONLY test cures for AIDS and cancer on animals, because that's understandable important, but even then, it is cruel. But like udsuna said, our bodies are unlike rats and other animals. Rats can produce Vitamin C but we can't, for example. It's unreliable.

I'm a starch believer in punishing those who commit crimes of animal cruelty very harshly, and I think the punishments for unnecessary Animal Testing (hopefully, almost ALL animal testing) should be punished harshly too. Any person who smears lipstick on living rat's eyes or crap like that should have the same thing done to them, in my opinion. Poor animals.