Dire rat (animal companion)

The dire rat is a small, fast, and furry animal that makes a good companion. Although it is of small size, it is very cunning. Every 5 levels of the master, the dire rat's diseased bite becomes harder to resist.

Characteristics

 * Race: Animal
 * Class: Rogue
 * Alignment: True Neutral
 * Skills: Hide, Move silently
 * Feats: Weapon finesse, Sneak Attack (initially +1d6 damage)

Special by Master Level

 * Level 5: Diseased bite DC 16
 * Level 10: Diseased bite DC 18
 * Level 15: Diseased bite DC 20
 * Level 20: Diseased bite DC 22