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"Von Willebrand disease affects both males and females and has been documented in more than 50 breeds of domestic dogs.  Most affected animals have few if any symptoms, and even those tend to recede with age.  Dogs with mild to moderate forms of the disease may not be diagnosed for years \u2013 often only after surgery or some other traumatic tissue injury, such as lacerations, dog bites or being hit by a car, that exposes the bleeding disorder."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.petwave.com/Dogs/Health/Von-Willebrand-Disease/Symptoms.aspx>