The New York Times > Science > Image > The Periodic Table Gets a Makeover
Whole Dog Journal is the monthly guide to natural dog care and training. Osteosarcoma is by far the most common form of bone cancer in dogs. About 75 to 85 percent of tumors occur on the legs, but can develop in any bone. Middle-aged and older large- and giant-breed dogs are most commonly affected. The first sign is usually limping, which may start suddenly, or develop gradually, and is often accompanied by swelling at the tumor site.