Dogs Can Sniff Out Cancer in Human Blood

Dogs can sniff out cancer in human blood with a high percentage of accuracy, finds new research.

BioScentDX researchers used clicker training to teach four beagles, by scent alone, to distinguish lung cancer patients’ blood samples from those taken from healthy people. Three of the four dogs were able to identify cancer samples with 97 percent accuracy, but one of the dogs, named “Snuggles,” was “unmotivated” to perform and didn’t do so well.

Researchers say their study paves the way for future studies to further explore the possibility of using dogs as tools for detecting cancers in humans.