Amid public protest against animal killing practices, the U.S. Department of Agriculture's Wildlife Services killed a total of 3.2 million animals in 2015.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/shocking-us-secret-wildlife-killing-program-killed-32-million-animals-2015
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/nature-world-news
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wolves
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mammals
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hunting