I'm not OV, but - The SRD does:
Hurting, oppressing, killing. That's the definition of evil.Originally Posted by SRD
Things without intelligence (or with animal intelligence) get a pass, mainly because they don't wontonly kill. If an animal kills, it's for one of three reasons: 1) territory, 2) food, 3) defense. Those situations don't really fall under the purvue of "evil", especially since one can escape said death just by running far enough away. An animal never kills because it's "convenient".