Hemp or marijuana: Can police K-9's sniff out the difference?

WHITEHALL, Ohio — K-9 Youg-Al is an expert at sniffing things out.“He does dual purpose, which means he does all the handler protection, tracking, area searches, article finds. On top of all that, the does explosive detection,” said Youg-Al’s handler, Whitehall Sergeant Dan Wardlow.A new law was signed in July that allows hemp to be grown and sold legally in the state. The question is, can police K-9's — which are trained in tracking down marijuana — tell the