Despite being new and having less than 20 wolves, I noticed while trying out pairs that some of my wolves were related - after following the lineage up they all descend in different gens and routes from the same progen pair, Ravenwing and Bearheart (owned by user Bearheart).
G2: Ravenwing/Bearheart > Dawnbreak
her grand ... nephew? R/B > Dovesong > Cabbage > Choi
A distant cousin: Ravenwing/Bearheart > Crocusfur > Soma > Melonie > Ruffles
Funny how different they all look, but maybe there's some resemblance?