Catcher (L), a Bedlington Terrier, and Tanner (R), a Border Terrier, hunt for rats in a small park on New York City's Lower East Side July 25, 2014.

REUTERSMike SegarCatcher L, a Bedlington Terrier, and Tanner R, a Border Terrier, hunt for rats in a small park on New York Citys Lower East Side July 25, 2014. New Yorks rats are nasty, and there ...