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| : Cossack´s Mikhael Russian Blue (RUS) Inbreeding coefficient: 19.29 % (4) - 41.59 % (10) Ancestor loss coefficient: 75.00 % (4) - 2.73 % (12)   | : CH Blue Bass af Mölleby of Cossack Russian Blue (RUS) | : Maxen av Olsenburg Russian Blue (RUS) | GIC, RW Lilleman av Olsenburg Russian Blue (RUS) | IC Andruschka av Olsenburg Russian Blue (RUS) | : IC, RW Blue Bell of Finlandia Russian Blue (RUS) | IC Hans af Bellahöj Russian Blue (RUS) | Tanja av Olsenburg Russian Blue (RUS) | : Cossack´s Ninotschka Russian Blue (RUS) | : CH Penn Illinis Blue Russian Blue (RUS) | : Freya of Three Crown Russian Blue (RUS) | CH Blue Bass af Mölleby of Cossack Russian Blue (RUS) | Valja av Olsenburg Russian Blue (RUS) | ||||||
| : CH Dalecarlias Blue Magnolia Russian Blue (RUS) | ||||||||||||||||||