Wis. Stat. § 29.627: Domestic fur-bearing animal farms.

The breeding, raising and producing in captivity, and the marketing, by the producer, of foxes, fitch, nutria, marten, fisher, mink, chinchilla, rabbit or caracul, as live animals, or as animal pelts or carcasses shall be considered an agricultural pursuit, and all such animals so raised in captivity shall be considered domestic animals, subject to all the laws of the state with reference to possession, ownership and taxation as are at any time applicable to domestic animals. All persons engaged in the foregoing activities are farmers and engaged in farming for all statutory purposes.