The tools symbolize the sort of work that individuals did at the time the flag was made in 1863; the symbols for agriculture (plough), mining (pick and shovel), production (arm and hammer), and navigation (anchor). The badger is the state animal hence it is present on the flag.
The Milwaukee County Zoo located in Milwaukee, Wisconsin covers more than 190 acres and houses more than houses 1,800 animals. The zoo is home to the largest group of bonobos in one location outside the Democratic Republic of the Congo.