HomeChemical ProcessingWhy Do Wet Dogs Stink? + Other Canine ChemistryFun fact: Dogs can smell so well they can detect diseases in humans. In one clinical trial dogs sniffed out prostate cancer in patients with 98 percent accuracy.Jun 4th, 2015Dogs! Woof Woof! They're so nice and fun. Bark Bark! They’re our best four-legged friends, and they’re the stars of many an Internet video. No, not cats. A cat is never really your friend.