Meet the dogs helping scientists sniff out cancer

Dogs, with their exceptional sense of smell, are being enlisted by scientists to aid in the early detection of cancer. These canine partners are being trained using artificial intelligence to analyze their reactions to scent, turning their responses into valuable data. Bengaluru-based Dognosis, a startup, is leading this unique experiment, utilizing AI to study dogs' brain activity, breathing, and body language.

Chloe, a Labrador mix and one of the 15 dogs being trained by Dognosis, wears a custom-designed data-gathering suit that resembles a futuristic Iron Man outfit. The research team has found that dogs possess around 300 million scent receptors, compared to about five million in humans, making them highly effective at detecting odors.

In a recent study involving over 1,500 patients across six hospitals in Karnataka, India, the Dognosis method achieved over 90% accuracy in detecting seven major types of cancer. While the results are promising, cancer specialists urge caution, emphasizing that larger studies are necessary to confirm the findings.

The dogs, mostly beagles and Malinois, undergo a rigorous training process that lasts around 30 to 45 minutes a day. They are rewarded with treats for their efforts, which are logged and analyzed by AI algorithms. Despite the advancements, the ultimate goal remains to integrate this technology into real-world cancer screening programs, providing a non-invasive initial test to help identify patients who may require further examinations.