A sorcerer can obtain a familiar. Doing so takes 24 hours and uses up magical materials that cost 100 gp. A familiar is a magical beast that resembles a small animal and is unusually tough and intelligent. The creature serves as a companion and servant.
The sorcerer chooses the kind of familiar he gets. As the sorcerer advances in level, his familiar also increases in power.
If the familiar dies or is dismissed by the sorcerer, the sorcerer must attempt a DC 15 Fortitude saving throw. Failure means he loses 200 experience points per sorcerer level; success reduces the loss to one-half that amount. However, a sorcerer’s experience point total can never go below 0 as the result of a familiar’s demise or dismissal. A slain or dismissed familiar cannot be replaced for a year and day. A slain familiar can be raised from the dead just as a character can be, and it does not lose a level or a Constitution point when this happy event occurs.
A character with more than one class that grants a familiar may have only one familiar at a time.
(...and much more...)