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Research shows that some dogs have an uncanny ability to detect impending seizures, cancer, and even when people will die. Some examples of these extraordinary animals can be seen in the two videos above.
In one new study, a Labrador retriever has been trained to detect colon cancer nearly as accurately as a colonoscopy. The dog was given breath and stool samples of more than 300 patients and gave back an accurate diagnosis 98 percent of the time.