Blue-Collar Dogs on Nat Geo WILD
4 The Love Of Animals
FEBRUARY 20, 2011
The medical field has expanded use of dogs from assisting the hard of hearing and the physically challenged to predicting blood sugar crashes, detecting oncoming seizures and sniffing out disease. Customs and Border Protection stand guard over land borders, deserts and urban ports of entry. Blue-Collar Dogs: Border Hounds.
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