Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship, and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname  man's best friend  in the Western world.
When looking to acquire nickels with Silver content, look for Silver War Nickels. The term Silver War Nickels refers to those produced by the United States Mint from mid-1942 to 1945. These nickels differ from those minted before and after World War II, as those were made from 56% copper, 35% Silver and 9% manganese.
Nickel was highly valued for use in armor plating, and Congress ordered the removal of this metal from the five-cent piece, effective October 8, 1942. From that date, and lasting through the end of 1945, five-cent pieces bore the regular design but were minted from an alloy of copper, silver and manganese.