• To register litters both parents must be NARR Registered as breedable.
• Rats must be registered by the owner at the time of registration.
• Prefix for litters can only be assigned for Members with registered prefixes.
• Rats with no known ancestors can not be registered with a prefix, you may however attach a suffix. ex: Sunny XXX or Sunny of XXX
• Registered rats must have a unique name, no two rats in the registry will have the same exact name (this includes prefix). XXX Sunny and XYZ Sunny are acceptable.
• Breeders can choose whether rats are breeding or pet only quality by selecting the Pet Only sex.  Direct offspring of pet only rats will not be granted registration.
• Once registered rat names cannot be changed.  Ownership can, however, be transferred.
• Terminology of registrations must be from a recognized rat organization either as a standardized or unstandardized term.

Co-Breedings ~ The NARR allows breeders to conduct co-breedings where one or more breeders are listed as the breeder of record.  The correct Co-breeder litter number application must be used.

• The primary breeder is the owner of the dam at the time of conception.
• Two prefixes can be given in the case of a co-breeding such as XXX YYY Sunny in those cases the primary breeder is XXX rattery and the co-breeder is YYY rattery.
• Litter numbers will be assigned with the prefix of the primary breeder.