Great info provided by Woogie Man. But, in the yorkie world it is not a possibility to breed phenotype to pheno type and know what the final result will be. It can be done with poodles, dobes, etc.
To the original poster, great you're going about this in a systematic, methodical way. As a breeder/exhibitor I suggest you attend seminars, and since your a nurse, canine genetic classes, whelping and breeding seminars. The yorkie breed is a very difficult breed, but very rewarding. I strongly suggest that you attend a few shows to decide your type. In order to set and keep type in the yorkie breed, one should line breed.
You stated above that you found a lil girl. I'm sure your vet will lead you to conduct all the required testing prior to breeding, eyes, ears, heart, kidneys, bile acids.
Good luck to you and take your time.
__________________ Mardelin Yorkshire Terriers |