Lead (Pb) is toxic and is banned from gasoline, paints, and various household items in most developed countries. Lead ammunition, however, is still widely used for hunting and shooting, and is now likely the greatest, largely unregulated source of lead that is knowingly discharged into the environment in the USA (Health Risks from Lead-Based Ammunition in the Environment—A Consensus Statement of Scientists 2013; U.S. Geological Survey 2013). For decades, poisoning from spent lead ammunition was mainly regarded as a disease of waterfowl (Bellrose 1959), but it also puts at risk the health of raptors, scavengers, and other terrestrial species, including humans who frequently consume hunted game (Fig. 1). Scientists across North America and Europe have published consensus statements on the risks to wildlife, the environment and human health from the use of lead ammunition, and the need for its replacement by non-toxic alternatives (Health Risks from Lead-Based Ammunition in the Environment—A Consensus Statement of Scientists, 2013; Group of Scientists 2014). This is now a pressing One Health issue.