register a litter 4
https://wiki-byte.win/index.php/Why_You_Should_Register_a_Litter_of_Designer_Puppies_the_Right_Way
When your cat has a litter of kittens, you'll need to register them with a recognized cat registry like CFA or TICA. This involves filling out paperwork with the parents' registration numbers, the birth date, and each kitten's color and sex. You'll usually need to do this before they're eight weeks old. The breeder can help guide you through the process, and it gives each kitten official pedigree papers for future breeding or showing.