The term 'fancy' means 'to like'. So to say 'The mouse(s) that we like' is more accurate. The mouse fancy does not exclude those who choose to not breed to show standards. To fancy and to show are two different things. To imply that those not concerned with breeding to show standards should not be included is elitist. There's more than enough love to go around for all of us to coexist with practicing exclusion and prejudice. To each his/her own and devil take the hindmost.