Sniffer Dogs Can Tell if a Person Has Lung Cancer

In Vienna, Austria, studies have shown that

trained sniffer dogs can detect lung cancer

in patients. Another example of dogs performing
an incredibly valuable service to mankind....

http://fox8.com/2012/12/05/dog-diagnosis-canines-could-sniff-out-lung-cancer/

photo: John Wade www.askthedogguy.com