My brother-in-law's girlfriend got her yorkie puppy at 6 weeks from a "backyard breeder", when I found this out I was all

because I know from reading it should be no sooner than 10-12 weeks, but so far the puppy's grown up to be a healthy well adjusted little girl. She is 10 months old now. Now I just wish they would have her spayed, but obviously they don't listen to me...