So doctors gave him a specially trained dog that can sense when an attack was coming on.

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Fido is the first sensor that can detect TNT and other explosives with the same success as a trained dog.

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"A well-trained dog and a very good, well-trained handler can find explosives with little or no false alarms, " Beltz said.

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The trained dog reportedly sensed something suspicious about -- or near -- a vehicle parked close to the West Wing, and sat down beside the four-door sedan.

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Using a specially trained sniffer dog, he found petrol in the carpet of the hallway but none outside.

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The justices found that a positive "hit" from the sniff of a well trained police dog could establish probable cause for the search of a vehicle.

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But Alton Kelley of the Family Dog was a trained artist, and soon the Dog's weekly dances were announced with posters that became increasingly sophisticated.

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To test their theory they monitored the daily outdoor routines of two people, one was alone and the other was accompanied by a dog trained to ignore passers-by so it would initiate social contact.

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Each dog is trained for the child's specific needs, and the entire process takes between nine and 18 months.

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Justice Kagan and the two justices who joined her concurrence considered a trained drug-detection dog to be a device not in general public use, and on those grounds would have found its use unconstitutional in light of Kyllo.

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When Harris declined to permit Wheetley to search his truck, the officer allowed his police narcotics dog Aldo, a German Shepard trained to detect certain narcotics, to sniff the general area and the dog alerted his handler to the possible existence of drugs.

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But the Purina Pro Plan P5 app has been designed by scientists and proved by rescue dogs that just about any K9 can be trained to become an agility dog.

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The Florida high court concluded that the state's general assertion a dog was sufficiently "trained" and "certified" was not enough alone to establish probable cause justifying vehicle searches.

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Mr Tovey dedicated the award to Guide Dog Mobility Instructor, Emma Yard, who trained the two to work together.

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"We want to try to explain the dog is anything but aggressive, unless it's been trained to do otherwise, " he said.

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The object of reward, with which Lee trained Rinty and prompted him to perform his amazing physical feats, was a small squeaky toy the dog had been given as a puppy.

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Tony Ball, spokesman for the Secret Service, said the dog that alerted security officers to a suspicious car on the White House grounds Thursday morning was trained to detect bombs only.

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