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WASHINGTON, June 1, 2015 � They’re our best four-legged friends, and they’re the stars of many an Internet video. No, not cats. This week on Reactions, we’re talking dogs. We investigate the chemistry behind your dog’s amazing sense of smell. We also explain why Fido stinks even after he’s had a bath. Also, have you ever noticed that dog food smells gross? There’s a reason for that. Check out all the canine chemistry here: .

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The American Chemical Öйú365betÖÐÎĹÙÍø is a nonprofit organization chartered by the U.S. Congress. With more than 158,000 members, ACS is the world’s largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.