Cancer is the leading cause of death in dogs, with over six million diagnosed annually in the US, according to the National Cancer Institute. Experts say that a poor diet and lack of exercise heighten the risk, but ensuring dogs stay active and eat well could extend their life by up to 30 percent.
Heart disease is the second leading cause of death, driven by degenerating heart valves and heart muscle problems, says Matthew Kaeberlein, co-director of the Dog Aging Project. Trauma and accidents are third, followed by other age-related diseases. Obesity is a major contributing factor to cancer, heart disease, and other conditions, with Dr. RuthAnn Lobos of Purina calling it the 'biggest threat' to lifespan.
Purina's 14-year study found that Labrador Retrievers fed lean meals lived nearly two years longer than those fed less lean diets. Most healthy dogs live 10-15 years, though smaller breeds may live longer. Genetics play a strong role, but regular veterinary checkups, dental care, and exercise are crucial. Poor dental health is linked to systemic conditions including cardiovascular disease and cognitive decline.
To protect your dog, avoid overfeeding, limit highly processed human foods, and prioritise exercise. Regular vet visits, vaccinations, and parasite prevention are essential. Minimising exposure to pollutants is also important, especially for breeds like Pugs, Shar Peis, and Rottweilers, which are genetically prone to cancer. Seniors need extra support for arthritis and other age-related changes.
