You cannot just guess based on how they look. You must DNA the litter and both males.
I have heard of one of my club member that did AI (Artifical Insemanation) of a champion stud that they had the sperm frozen and shipped in. It was some special BIS Winner - reason they had it shipped to them. And they for some reason could not send the girl. To make sure they got a litter, they also bred their dog to another male. Then when the litter was born, they simply DNA the litter. For one reason or another they could not pass up breeding their girl. Now grant you, their female was a finished champion and a group winner and both sires used were exceptional. They just wanted to make sure she had a litter just in case the frozen sperm did not produce any pups. I am not sure what the outcome was. I just remember them talking about this at one of my meetings and how excited they were and hoped it worked. They were not concerned about doing the DNA and at least they were doing it. I do not think it is a problem as long as it is done to prove who are the parents.
T. |