Skill points equal to 2 + Int modifier (minimum 1) per Hit Die. Most vermin, however, are mindless and gain no skill points or feats. Vermin have no class skills.
Vermin possess the following traits (unless otherwise noted in a creature's entry).
Mindless: No Intelligence score, and immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms). A vermin-like creature with an Intelligence score is usually either an animal or a magical beast, depending on its other abilities.