Nitro would like a word. The three-year-old chocolate Lab working with Customs and Border Protection at Philadelphia International Airport recently sniffed out $44,690 in undeclared cash from a passenger headed to Cancun, and federal officials are using the moment to remind summer travelers that bulk cash and airports are a combination that tends to end badly. Videos by VICE The traveler, a 54-year-old naturalized U.S. citizen from Peru, had cash stashed in his pockets, in separate envelopes, and inside his carry-on, according to a CBP press release . When officers asked what he was carrying, he said $10,000. That’s the magic number, the federal threshold above which international travelers are legally required to file a declaration. He had considerably more than that. A thorough inspection found considerably more than $10,000. Officers seized nearly everything, leaving the man $240 for what officials described as “humanitarian purposes.” The remaining $44,450 went with CBP.…