Wis. Stat. § 701.0408: Trust for care of animal.

(1) An animal trust may be created to provide for the care of an animal alive during the settlor’s lifetime. The animal trust terminates upon the death of the animal or, if the animal trust was created to provide for the care of more than one animal alive during the settlor’s lifetime, upon the death of the last surviving animal.

(2) An animal trust authorized by this section may be enforced by an animal protector. A person having an interest in the welfare of the animal may request the court to appoint an animal protector.

(3) Property of an animal trust authorized by this section may be applied only to its intended use, except to the extent the court determines that the value of the animal trust property exceeds the amount required for the intended use. Property not required for the intended use must be distributed to the settlor, if then living, otherwise to the settlor’s successors in interest.