I found this site as a link on a breeder's webpage - the ethos is a

"site for information about the history of the pedigree cats, and to educate cat breeders about the need for genetic variation and what the situation is in their breed. In order to do this, we are publishing databases with pedigree information for different breeds, with functions for calculations of the inbreeding coefficient and pedigree analyses. We also publish articles related to these topics. Along the way, we will probably add articles about other health issues and breeding issues as well, for the education of breeders."


PawPeds

There are many breeds there, not only cats but also dogs.

Thought I would add an example from Maine Coon database:

The Maine Coon Database