We already knew dogs are man's best friend, but they might also be our resident doctor. Ok, that's a bit of a stretch. However, in a German study, trained sniffer dogs identified 71 out of 100 samples with lung cancer, as well as 372 out of 400 cancer-free samples. According to the study, the dogs are able to identify volatile organic compounds that are linked to the presence of cancer on people's breath. Moreover, the dogs were also able to differentiate between cancer, chronic obstructive pulmonary disease, tobacco smoke, food odors and drugs.
The study is slated for publication in the European Respiratory Journal. To read more, click here.