If you see this dog coming for you, run. Thanks to his extensive training--and customized body armor that can cost upwards of $30,000--he's bulletproof, can hear through concrete, and can record high-def video of missions, even in the dead of night.
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http://www.fastcompany.com/1753360/the-tech-that-outfits-the-dogs-of-war
Good doggy!