Health
Is this a bleeding disorder or a clotting disorder?
It's more accurately a clotting disorder; affected dogs don't bleed more easily, they have trouble stopping a bleed once it starts.
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Old English Sheepdog Von Willebrand's Disease: A Clotting Problem, Not a Bleeding One
Quick answer
Is this a bleeding disorder or a clotting disorder?
It's more accurately a clotting disorder; affected dogs don't bleed more easily, they have trouble stopping a bleed once it starts.
The wound isn't the problem; the missing piece that's supposed to plug it is.
Owners whose dog has had unexpectedly prolonged bleeding after a minor injury or routine procedure, and anyone planning a spay, neuter, or other surgery for their dog.
Important reminder
This guide is not medical advice. If your dog shows pain, sudden behavior change, or worsening symptoms, consult a licensed veterinarian.
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What this problem looks like
Von Willebrand's disease is an inherited deficiency or dysfunction of a protein platelets need to properly plug an injury, making it harder for affected dogs to stop bleeding once it starts rather than making them bleed more easily overall. It often goes unnoticed until surgery or a significant injury reveals prolonged bleeding, which is why pre-surgical screening is a reasonable precaution.
Common triggers
- An inherited deficiency or dysfunction of von Willebrand factor
- Surgery or significant injury revealing the underlying clotting problem
- Skipping pre-surgical clotting screening before an elective procedure
- Unscreened breeding stock passing on the genetic mutation
- Certain medications that can further impair clotting in an affected dog
This isn't among this breed's most specifically documented health issues, but von Willebrand's disease occurs across dog breeds broadly often enough that pre-surgical screening is a reasonable, low-cost precaution regardless of how prominently it's discussed for any particular breed.
Why this happens
Breed factors
This breed's documented health record doesn't flag von Willebrand's disease as a defining condition, but its inherited genetic basis means it can occur in any breed's population, following the same clotting-protein deficiency mechanism recognized across dogs broadly.
Environment factors
There's no environmental trigger for the underlying protein deficiency itself, since it's a genetic condition, though certain medications that affect platelet function can compound bleeding risk in a dog that already has this condition.
What you can do at home (once it is not an emergency)
When to talk to your vet
Talk to your vet about any bleeding that seems disproportionate to the injury or takes unusually long to stop. Seek prompt care for spontaneous nosebleeds, blood in urine or stool without clear cause, or any bleeding that doesn't stop with basic first aid.
At home, alongside your vet's plan
- Ask your vet about a pre-surgical clotting screen before any elective procedure, particularly a first surgery for a young dog.
- Watch for prolonged bleeding after minor injuries like a nail trimmed too short, and mention any pattern to your vet.
- Avoid giving aspirin or other medications that affect clotting without your vet's explicit guidance.
- Keep a record of any bleeding episodes, including how long they took to stop, to share with your vet.
- Ask breeders about any known family history of prolonged bleeding or a formal von Willebrand's diagnosis.
More OLD English Sheepdog health & behavior issues
- Old English Sheepdog IVDD: The Gradual Pattern This Breed Gets
- Old English Sheepdog Kidney Disease: Catching It Early
- Old English Sheepdog Pancreatitis & Diabetes: The Senior-Year Link
- Old English Sheepdog Pancreatitis: Recognizing an Acute Episode
- Preventive Gastropexy for Old English Sheepdogs: The Decision
- Eye Disorders in Old English Sheepdogs: The Full Picture
- Noisy Breathing in Senior Old English Sheepdogs: Laryngeal Paralysis
- Old English Sheepdog Allergic Reactions: Signs & Emergency Care
- Old English Sheepdog Allergies: Triggers, Ears & Skin
- Old English Sheepdog Obesity: Why Weight Creeps Up Unnoticed
- Old English Sheepdog Separation Anxiety: A Working-Breed Trait
- Old English Sheepdog Skin Allergies: Spotting Them Under the Coat
- Old English Sheepdog Skin Infections: The Moisture Problem
- Cancer in Old English Sheepdogs: Why Early Detection Is Harder
- Corneal Dystrophy in Old English Sheepdogs: Cornea vs Lens
VON Willebrands Disease in other breeds
- Jack Russell Terrier Von Willebrand's Disease: Signs
- Labradoodle Von Willebrand's Disease: Signs & What to Do
- Maltese Von Willebrand's Disease: Signs, Causes & What to Do
- Miniature Schnauzer Von Willebrand's Disease: Signs
- Poodle Von Willebrand's Disease: Signs, Causes & What to Do
- Rottweiler Von Willebrand's Disease: Signs & What to Do
- Standard Schnauzer Von Willebrand's Disease: Signs
- Yorkshire Terrier Von Willebrand's Disease: Signs
- Akita Von Willebrand's Disease: Signs, Testing & Management
- Bichon Frise Von Willebrand's Disease: Living With a Silent Bleeder
See all OLD English Sheepdog health problems, which breeds are prone to von willebrands disease, or the full OLD English Sheepdog breed guide for temperament, exercise needs and ownership costs.
What to expect, and how you know it is working
This is a lifelong genetic condition present from birth, though it's often not discovered until a surgical procedure or significant injury reveals it, sometimes not until adulthood if no prior surgery or major injury has occurred.
Success looks like an early diagnosis through pre-surgical screening, appropriate precautions taken during any necessary procedure, and prompt attention to any bleeding episode, rather than an unexpected discovery during an emergency.
What Von Willebrand Factor Actually Does
Normal clotting relies on a protein called von Willebrand factor, which acts like a molecular glue helping platelets stick to an injury site and to each other, forming the initial plug that stops bleeding before the rest of the clotting cascade reinforces it. In von Willebrand's disease, a genetic mutation results in too little of this protein, or a version that doesn't function properly, meaning that initial platelet plug forms poorly or not at all. The practical result is prolonged bleeding from cuts, prolonged bleeding after a routine procedure like a nail trim gone slightly too short, or in more severe cases, spontaneous nosebleeds or bleeding from the gums without any obvious injury at all.
Why This Often Goes Unnoticed Until a Real Test
Many affected dogs show no obvious signs during normal daily life, since everyday minor bumps and scrapes may not be severe enough to reveal the underlying clotting problem clearly. Surgery, even a routine spay or neuter, is often the first real test, and a dog bleeding more than expected or for longer than expected during or after a procedure is a classic way this condition first comes to light. This is exactly why many vets recommend a simple pre-surgical clotting screen for breeds and individual dogs where von Willebrand's disease is a documented possibility, catching the issue before an elective procedure rather than discovering it mid-surgery.
Fable's Pre-Spay Screening
Before scheduling a routine spay for his Old English Sheepdog puppy Fable, Callum's vet recommended a standard pre-surgical clotting screen, mentioning it as a reasonable precaution for the breed and age regardless of any specific concern. The screen came back showing reduced von Willebrand factor levels, confirming the disease before any incision was ever made. Callum's vet adjusted the surgical plan accordingly, having appropriate blood products on standby and using extra care with incision closure. Fable's surgery went smoothly with only slightly more monitoring than usual, and Callum now shares her diagnosis with any vet handling her future care.
Key takeaway: A screening test run purely as a precaution, not because anything seemed wrong, is what caught Fable's condition before it could complicate a routine surgery in the operating room instead.
Frequently asked questions
Is von Willebrand's disease common in dogs generally?
It's one of the more commonly diagnosed inherited bleeding disorders across dog breeds broadly, caused by a deficiency or dysfunction of a specific clotting protein rather than any single breed-exclusive mechanism.
What does this disease actually do to a dog's blood?
It impairs the platelet-plugging step of clotting due to a missing or malfunctioning protein, meaning a dog has a harder time stopping a bleed once one starts, rather than bleeding more easily in general.
How is it usually discovered?
Often during or after a surgical procedure, when a dog bleeds more than expected, since everyday minor injuries may not be severe enough to reveal the underlying clotting problem clearly beforehand.
Can it be tested for before surgery?
Yes, a pre-surgical clotting screen or specific von Willebrand factor test can identify the condition beforehand, allowing a vet to take extra precautions during any planned procedure.
Is there a cure for von Willebrand's disease?
No, it's a lifelong genetic condition, though it's manageable with precautions like avoiding unnecessary elective procedures, having appropriate blood products available during necessary surgery, and prompt attention to any bleeding episode.
Does severity vary between dogs?
Yes, some affected dogs have mild, rarely symptomatic disease, while others have more significant clotting protein deficiency causing more frequent or severe bleeding episodes.
Should breeding dogs be tested for this condition?
Yes, since it has a clear hereditary component, testing breeding stock is a reasonable precaution to avoid producing more affected puppies, particularly in lines with any known history.
Quick answers
View more answersHealth
When does this condition usually first get discovered?
Often during or after surgery, when bleeding is more prolonged than expected for a routine procedure.
Costs
Can this be tested for before surgery?
Yes, a pre-surgical clotting screen can identify the condition beforehand so precautions can be taken.
Health
Is there a cure?
No, it's a lifelong genetic condition managed through precautions rather than cured.
Training
Should breeding stock be tested?
Yes, given its hereditary component, testing breeding dogs is a reasonable precaution against producing affected puppies.
Related DogBreedCompass guides
- von Willebrand's disease Type 1 explained – A specific, milder genetic subtype of this condition is covered in more targeted depth.
- surgery and recovery for patellar luxation – Any planned surgery, including for orthopedic conditions, benefits from clotting status being known in advance.
- Old English Sheepdog cost of ownership – Owners budgeting for pre-surgical screening should see the full cost picture for this breed.
- insurance claims patterns for the breed – Insurance claims data help owners plan for genetic testing and surgical precaution costs.
- Old English Sheepdog breed overview – The full breed profile helps buyers understand overall documented genetic risk factors.
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