Survey research finds breed-level tendencies, with some breeds scoring higher on activity or sociability, but within-breed variation is equally large.

Littermates can differ dramatically, and early socialization, the queen's state, and upbringing often shape adult personality more than the breed label.

Treat breed descriptions as references, not promises: observe the individual interacting and ask breeders or shelters about its actual history.

The firmer breed differences are care demands and inherited disease profiles: daily grooming for longhairs and breed-specific heart or kidney screening, which should drive breed choice.