Hemophilia B in Dogs

Category: Blood
Breeds documented: 1
Published sources: 6

Overview

Factor IX is one of the blood proteins needed to form a clot. When its activity is too low, bleeding after a wound or operation may be difficult to control. Severe forms can also cause bleeding inside joints, muscles, the chest or the abdomen. Some dogs show no obvious problem until an injury or surgery, while others develop signs earlier in life.

Signs to watch for

Gums that bleed excessively during teething
Bleeding from a small wound that lasts longer than expected
A swollen joint with limping
Excessive bleeding after surgery

Signs may appear during teething, though some dogs remain unnoticed until injury or surgery.

Emergency Go to an emergency vet now if your dog is bleeding heavily.

Diagnosis and tests

Diagnosis depends on measuring factor IX activity in a blood sample. Standard clotting tests may also be prolonged, but female carriers can have normal results. DNA testing is available for certain known variants, and the test must match the variant being investigated.

Breeds with documented risk

1 breed

By breed size

1 Large

Rhodesian RidgebackLarge · Hound Group

Inheritance

Not yet known
None of the sources we use states how this is inherited in dogs yet.

We've gathered what published sources say about this condition, so you can talk it through with your vet. It isn't veterinary advice: you and your vet know your dog best.