There are 2 types of bone cancer in dogs:
primary, which originates from the bone
secondary, which is spread from cancer in other parts of the body
Secondary bone tumors are rare in dogs.
appendicular skeleton or long bones (limbs)
axial skeleton or flat bones (jaw, skull, spine and ribs)
Common types of primary bone cancer in dogs
This is the most common primary bone tumor in dogs. Learn more about it here –> Osteosarcoma in Dogs
This is the second most common primary canine bone cancer. It is a cartilage tumor that usuallty occurs on axial skeleton of medium and large breed dogs. Although a malignant tumor, chondrosarcoma is less aggressive than osteosarcoma.
This rare type of primary bone tumor is locally invasive, so it has a low tendency to spread. It affects mainly the axial skeleton of medium and large breed dogs
This is a rare type of primary bone tumor, which can affect axial and appendicular skeleton. Hemangiosarcoma is a highly metastatic and aggressive tumor.
Canine Bone Cancer Symptoms
The symptoms of bone cancer in dogs are determined by tumor location.
Symptoms of tumors of the appendicular skeleton:
- swelling of the affected bone
Pain can cause:
- weight loss
- loss of appetite
- decrease in activity
Symptoms of tumors of the axial skeleton:
- swelling (skull, jaw, ribs)
- eating difficulty (jaw tumor)
- seizures, unsteady gait (skull or vertebral tumors)
- lameness (shoulder blade or pelvis)
If a primary bone tumor has metastasised to the lungs, dogs may show symptoms of:
- swelling of limbs
- breathing difficulty
See the next post on: Canine Bone Cancer: Treatment, Prognosis & Life Expectancy