Ratterfly Rattery-- An absolutely awsome rattery in San Diego, run by a wonderful rat, and every other animal, fanatic!

Silver Cuddles Rattery - Another great rattery in San Diego. I've gotten rats from both here and Ratterfly; highly recommended!

Kitty's Rattery - Adorable litters in Livermore, CA. They also occasionally breed hamsters.

Ratster - Looking for a rattery in your area? Or for other rat-related sites? Check out Ratster!

RMCA.org -- The Rat and Mouse Club of America

A list of articles from petratscanada.com -- A wonderful, well-organized place to find an article on everything you ever wanted to know about rats!