In today's health matters, man's best friend can now help detect cancer.

German researchers trained several dogs to use their keen sense of smell as a way to detect lung cancer in humans. Scientists say after two years of training these dogs are accurate more than 70 percent of the time.

Study authors say the dog's noses have a lot more going for them then any mechanical test. The dogs can also detect a difference between patients who have had the disease for some time compared to those who recently became ill.

The team suggest further research is needed to determine the best breeds to train for sniffing out this disease.