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2
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A dog used by the police
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3
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when an animal recognises you as another animal, person, or thing
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4
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scientists that study animal behaviour
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5
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A dog used by police or detectives to sniff out drugs and/or explosives
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6
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animals produce this when they smell or eat food
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7
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A Russian scientist that was interested in the digestive enzymes in dog saliva
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1
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A behaviour that has been changed due to experiences
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