The most common primary bone tumor in dogs is osteosarcoma. (cvm.ncsu.edu)
Osteosarcoma, which can be caused by fluoride, is the most common primary bone tumor in dogs, occurring in over 8, 000 dogs each year in the United States. (dogsnaturallymagazine.com)
Osteosarcoma is the most common type of primary bone tumor in the dog. (doghealth.com)