Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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A group of pugs is called a grumble.
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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One in three dog owners say they have talked to their pets on the phone.
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