I have to keep track or I'd have no idea of what I was pairing with what, as none of my meeces came with pedigrees. I had to figure out genotypes on the fly as teh generations furred up. It has been very edifying. Even the tris I started with came with very sketchy information, and I was truly confused about how that whole phenomenon worked.
I bet you are asking, though, about other breeders of known lines that breed true, right?
I bet you are asking, though, about other breeders of known lines that breed true, right?