After I asked this question and received the reply below, I have contacted my vet about the tests. I was advised that if Lola or Otto had VWD then they would have produced symptons from their surgery and deep wounds they have both had, and I have also found research stating the same:- My question:- Both my dogs have cut themselves with no excessive bleeding, infact Lola sliced her leg open whilst out walking and nicked her artery, I had to walk her backthrough a mile of fields and the bleeding had almost stopped by the time I got her to the vet, my vet would have mentioned if he thought there was a problem with either dog as they have both had operations. Just thought I would point out Lola and Otto's dad is one of the puppies grandad. Reply from Dawn No Claudeen it doesnt work like that Im afraid. My Co-owned Dobermann is vWD AFFECTED. He has had a tooth removed and has had cuts too, he didnt bleed to death once! However he DOES have the disease and it could affect him at any time resulting in serious heamorraging or worse. The ONLY way you will know is if they are DNA tested. Information from internet. B]Excessive bleeding is the main symptom. Bleeding generally occurs after a wound or surgery. In these cases, the blood simply does not clot in the normal time, and bleeding is extensive. Dog's with Von Willebrand's disease may also develop nosebleeds, or bleeding from the gums. [/B] I have alos just rang a random vet from the yellow pages and been given the same answer.