
I have gone as close as half Uncle to neice (the bitches mothers half brother). Would only consider full uncle if I liked the parent of my bitch so much that I woudl want to really set their traits. What you ahve to remeber is that both goods and bad traits would be fixed.
I would want to study carefully the health and temperament of the paretn and the Uncle them selves. This would include gentle probing about any niggling small things that might not be a major issue but certainly don't watn frixing into a line, this oculd be somthing like being very picky with food, a poor doer, or maybe they both are not the best with other dogs, or are a little shyer or hyper than ideal.
I would then want to see what their ancestors were liek for good and bad, and also waht they had already produced to other mates. You want to know that your bitches parent and his/her brother are able to pass on their outstandign qualities, and few of their faults.
Then I would want to be sure that the Uncle and yoru bitch didn't actuqaly exhibit any of the same faults, and that both ahd better than average health screening results,a dn were fit and vigorous animals.