PHOTOS: Training preps guide dogs for 'take off' at PDX

PORTLAND, Ore. (KOIN) -- Travelers were treated to a "paw-sitively" cute sight at Portland International Airport Saturday morning.

Around 25 pups with Guide Dogs for the Blind groups from Portland and Vancouver - along with their volunteer raisers - got some special practice going through airport security.

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This marked a training period for the dogs, where they learned how to successfully...