Lung cancer is really hard to detect early. But a new study done in Germany, reported by Gizmodo.com, has found that dogs can be taught to sniff out 71 out of 100 cancer patients. They also were able to pick out 372 out of 400 who did NOT have the disease.
"Not only that, but they could tell the difference between lung cancer and COPD. And it didn’t matter what medications they were on, whether they had recently been smoking, or what they had recently eaten," Gizmodo reports.