They have done nothing that shows that they are a cat or something, just cause someone is a serial killer does not mean they are not human. Everything anyone does is in our nature, even if its only done once it was still done. They are so fascinating to read about, their lives are sometimes like a fairy tale from hell. Tommy Lynn Sells is the one who got me into them, I saw him on Most Evil and was just so fascinated with his story. I'm not interested in the kind of "mainstream" serial killers like Manson and them and female serial killers are so painfully boring. My favorite serial killers are Andrei Chikatilo and Albert Fish, they remind me of myself and we share the same ideas.