Because 39,438 otters are inhumanely killed for fur every year.
American and Canadian furs are traded at big auction houses in America and Canada and the strongest markets are in China and South Korea. Manufacturing centres exist in central and NE China and South Korea. Buyers come from Beijing, Hong Kong, Japan, Germany, Italy, Greece, New York, Turkey, Toronto and the UK
If the average figures are extended to the remaining states it gives a total per year of 28,462 for USA and 10,976 for Canada.
See the petition on secure.avaaz.org