is von willebrand disease hemophilia
This then reacts with factor III and so on to factor XII. In Von Willebrand's Disease, the dog is missing a substance, which helps the platelets form clots and stabilizes Factor VIII in the clotting process. This substance is called 'Von Willebrand's factor.' Because of the deficient clotting of blood, dogs with Von Willebrand's disease have excessive bleeding upon injury. This would be similar to hemophilia in humans. Certain breeds have a higher incidence of vWD than others.