From the Wisconsin DNR: http://dnr.wi.gov/ORG/LAND/ER/factsheets/mammals/wolf.htm "A few hunters continue to kill wolves, believing that such actions will help the deer herd. It is important to place in perspective the impact of wolves preying on deer. Each wolf kills about 20 deer per year. Multiply this by the number of wolves found in Wisconsin in recent years (630), and approximately 13,000 deer may be consumed by wolves annually. This compares to over 40,000 deer hit by cars each year, and about 450,000 deer shot annually by hunters statewide. Within the northern and central forests where most wolves live, wolves kill similar numbers of deer as are killed by vehicles (about 13,000), and about 1/10 of those killed by hunters (127,000 in 2008). Wolves are a factor in the deer herd, but only one of many factors that affects the total number of deer on the landscape." Wolves are NOT a problem in Wisconsin.