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Jack, a rescue dog with Conservation Canines, trains for the first day on a boat in the Puget Sound to track feces of endangered killer whales for scientific research. He is a part of the Center for Conservation Biology at the University of Washington. Brittany Peterson/McClatchy
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More Videos

NRA's LaPierre at CPAC: We must harden 'wide open target' schools 1:40

NRA's LaPierre at CPAC: We must harden 'wide open target' schools

Schools across the U.S. are dealing with gun threats 1:21

Schools across the U.S. are dealing with gun threats

Hilton Head fishing crew catches 16-foot great white shark 0:45

Hilton Head fishing crew catches 16-foot great white shark

Evangelist Billy Graham dies at 99 5:13

Evangelist Billy Graham dies at 99

North Carolina toy store enlists BB-8 for some Olympic curling fun 0:37

North Carolina toy store enlists BB-8 for some Olympic curling fun

'Our innocence has been taken from us,' school shooting survivor says 1:48

'Our innocence has been taken from us,' school shooting survivor says

Do you know what to do in an active shooter situation? This Florida sheriff's office can show you. 6:14

Do you know what to do in an active shooter situation? This Florida sheriff's office can show you.

School shooters: Know the warning signs 2:30

School shooters: Know the warning signs

Trump to American children after Florida school shooting: You are never alone 1:01

Trump to American children after Florida school shooting: You are never alone

AR-15: The Gun Behind So Many Mass Shootings 2:05

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