An obstacle that can cause a great deal of difficulty for agility dogs is the teeter. If you think about it, it makes absolutely no sense to run up a board that slams to the ground when you reach the top. Any smart dog would have to wonder why he should do such a ridiculous thing.
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A dog’s nose is an amazing thing to behold. Dogs have the ability to: wiggle each nostril independently, breathe in through the holes in the front of the nose and exhale through the side slits, and discern individual odors making up what we could call a “scent.” Humans have about 5 million cells devoted to smelling; dogs have up to 220 million. Not only that, but dogs have four times the brain power devoted to processing scents! We smell “vegetable soup,” but a dog smells each individual ingredient. Dogs’ noses are so powerful they can detect one tablespoon of sugar in the amount of water it would take to fill two Olympic-sized swimming pools!