Breeds Prone to Cancer
Cancer is a leading cause of death in older dogs, with certain breeds having significantly higher cancer rates. Common types include lymphoma, hemangiosarcoma, osteosarcoma, and mast cell tumors. Early detection dramatically improves outcomes.
Symptoms
Abnormal swellings that grow, sores that do not heal, weight loss, loss of appetite, bleeding or discharge from any body opening, difficulty eating or swallowing, persistent lameness, and difficulty breathing.
Prevention & Management
Regular veterinary screenings, prompt investigation of any lumps or bumps, spaying/neutering (reduces certain cancer types), maintaining healthy weight, limiting sun exposure for light-skinned breeds, and choosing breeders who track cancer rates in their lines.
12 Breeds Prone to Cancer
12 dog breeds

Bernese Mountain Dog
Dog · Large-Giant · Switzerland
Health risks: Cancer, Hip Dysplasia, Elbow Dysplasia, Bloat
Boxador
Dog · Large · United States
Health risks: Hip Dysplasia, Heart Disease, Bloat, Cancer

Boxer
Dog · Large · Germany
Health risks: Cancer, Heart Conditions, Hip Dysplasia, Bloat
Bull Mastiff
Dog · Large · England
Health risks: Hip Dysplasia, Bloat, Cancer, Eye Conditions

Flat-Coated Retriever
Dog · Large · England
Health risks: Cancer, Hip Dysplasia, Bloat, Eye Conditions

German Shorthaired Pointer
Dog · Large · Germany
Health risks: Hip Dysplasia, Cancer, Bloat, Eye Conditions

Golden Retriever
Dog · Large · Scotland
Health risks: Cancer, Hip Dysplasia, Heart Disease, Eye Conditions

Leonberger
Dog · Giant · Germany
Health risks: Hip Dysplasia, Bloat, Heart Disease, Cancer

Rottweiler
Dog · Large · Germany
Health risks: Hip Dysplasia, Heart Problems, Cancer, Bloat

Saluki
Dog · Large · Middle East
Health risks: Heart Disease, Cancer, Hypothyroidism, Anesthesia Sensitivity

Scottish Terrier
Dog · Small · Scotland
Health risks: Scottie Cramp, Von Willebrand's Disease, Cancer, Liver Disease

Wirehaired Vizsla
Dog · Large · Hungary
Health risks: Hip Dysplasia, Eye Conditions, Hyperuricosuria, Cancer