In their natural form, hounds of law were tiny luminous spheres as bright as fireflies. They could vibrate rapidly in order to produce buzzing sounds, which they used as a limited form of communication.
Hounds of law could rapidly transform themselves into various animals, such as dogs, elephants, hawks, horses, panthers, rats, sharks, and snakes. Transformed hounds of law were usually more powerful than normal animals.
Hounds of law were lawful creatures bred by the vaati. As such, they were loyal to their masters and would sometimes be sent on solitary missions. A few hounds bred by Wendeam vaati were lawful good like their masters.