Cancer by Body Location

Browse cancers grouped by where they occur in the body.

Skin

Skin Cancer in Dogs — Overview of skin cancers including mast cell tumours, melanoma, squamous cell carcinoma, and cutaneous hemangiosarcoma.

Bone

Bone Cancer (Osteosarcoma) — The most common primary bone tumour in dogs, typically affecting large and giant breeds.

Mammary

Mammary Gland Tumours — Common in intact and late-spayed females; roughly half are malignant.

Oral

Oral & Mouth Cancers — Includes melanoma, squamous cell carcinoma, and fibrosarcoma of the mouth.

Liver

Liver & Biliary Tumours — Primary and metastatic tumours of the liver and bile duct system.

Kidney / Urinary

Kidney & Urinary Tract Cancer — Transitional cell carcinoma of the bladder/urethra and primary renal tumours.

Lung

Lung Cancer — Primary pulmonary tumours are uncommon; metastatic spread to the lungs is more frequent.

Spleen

Spleen Cancer (Hemangiosarcoma) — Splenic hemangiosarcoma is aggressive and can present as sudden collapse from internal bleeding.

Gastrointestinal

Gastrointestinal Tumours — Tumours of the stomach, small intestine, colon, and rectum.

Brain / Spine

Brain & Spinal Cord Tumours — Primary CNS tumours (meningioma, glioma) and metastatic disease affecting the brain and spine.

Endocrine

Endocrine Tumours — Tumours of hormone-producing glands including thyroid, adrenal, and pituitary.

Reproductive

Reproductive System Tumours — Testicular, ovarian, uterine, and transmissible venereal tumours.