I am just curious, not being rude at all
But, how do you know Bimmer was a wolf cross? Wolves will not normally mate with a lone dog, especially when travelling in pack. It could happen only if there just happened to be a lone wolf that met upon a dog in heat. That doesn't happen as often as people say it does. Even if the pups looked wolfy, that does not prove any thing, I know one line of Purebred Shepherds that look more wolfy than dog...they don't have any wolf in them at all, you can trace their blood lines.
I think that is the most famous of all lines a country person gives to people looking for a pup. I hear it all the time, the pups have wolf in them when in reality they have no wolf and the person who had the accidental litter uses this ploy to get rid of the pups. There is nothing more romantic to a person, or build up their self esteem than having a dog they can say has wolf in it. This also is bad publicity for people who "heard" that Wolf/Shepherd crosses are wonderful and actually purchase a real one and find they took on a challenge that is much too much for them. It can also be very dangerous.
I never believe a dog has wolf in it by some one who "tells" me the female got loose and was bred by a wolf. How do they know? do they have pictures, or do they keep the wolf on premises for breeding? I would only believe it if the person can produce DNA test, or show me the male wolf on site.