Yes — dogs can smell cancer, and it’s actually pretty amazing how accurate they can be. 🐶
Dogs have an extraordinary sense of smell, estimated to be up to 100,000 times more sensitive than that of humans. This allows them to detect subtle chemical changes in a person’s body caused by diseases like cancer. Studies have shown that trained dogs can identify several types of cancer, including:
- Lung cancer
- Breast cancer
- Prostate cancer
- Bladder cancer
- Skin cancer (melanoma)
They can often do this by smelling a person’s breath, urine, sweat, or skin samples, picking up on volatile organic compounds (VOCs) released by cancer cells.
While dogs aren’t used as an official diagnostic tool in medicine, researchers are studying how their powerful noses might inspire new cancer-detection technology. In real life, there have been reports of dogs persistently sniffing, licking, or pawing at a spot on their owner’s body — and later that area turned out to be cancerous.