The U.S. Postal Service announced on Thursday that the number of dog attacks on letter carriers had increased in 2016. Above, USPS letter carrier Jamesa Euler delivers mail in Atlanta in 2013. David Goldman/AP hide caption toggle caption David Goldman/AP The Two-Way Postal Service Reports Increase In Dog Attacks On Letter Carriers April 7, 2017 The USPS said its employees were bitten in 6,755 attacks in 2016, and Los Angeles topped the list, with 80. The postal service also released safety tips.