A One Health perspective: COVID-sniffing dogs can be effective and efficient as public health guardians.

Scent-detection dogs have been used for decades to locate drugs, explosives, toxic waste, and more. Scent dogs have been trained to alert for seizures and hypoglycemia, locate cadavers, and screen for viruses, bacterial infections, and numerous cancers. These capable dogs warrant a more significant role in public health protection.

The use of sniffer dogs for early detection of cancer: a One Health approach.

This review, which is part of the "Currents in One Health" series, describes and evaluates the current research on the utilization of trained medical scent detection, aka "sniffer" dogs for the detection of diseases, with particular emphasis on neoplasia, both within human and veterinary patients. A recent study by the authors that used sniffer dogs to detect differences in saliva from dogs diagnosed with various neoplastic processes compared with healthy control dogs is described. The concept of One Health is explored by the description of previous studies that have utilized sniffer dogs in the detection of human neoplasia (focusing on lung, prostate, and breast cancer) and veterinary neoplasia and demonstrating that further research in this arena can benefit multiple species.