Companion Animals

Dog Bone Cancer Osteosarcoma Welfare

Osteosarcoma is the most common bone tumour in dogs, causing severe pain and having a poor prognosis even with treatment, requiring proactive pain management throughout the disease course.

Key Facts

Osteosarcoma accounts for 85% of malignant bone tumours in dogs
Large and giant breeds including Great Danes and Irish Wolfhounds are disproportionately affected
Pain is typically severe at presentation and worsens rapidly without treatment
Limb amputation combined with chemotherapy extends median survival to 10-12 months
Palliative radiation provides pain relief for 4-6 months in dogs not undergoing surgery

Welfare Considerations

Osteosarcoma causes severe bone pain that is often inadequately managed. Proactive palliative care and honest quality of life assessment are essential throughout the disease.

What You Can Do

Seek veterinary assessment immediately for any lameness or bone swelling in large breed dogs
Discuss all treatment options including palliative care at diagnosis
Use multimodal pain management to maintain quality of life
Access quality of life scoring tools to guide end-of-life decision making