Mich. Comp. Laws § 700.7408: Trusts for pets.

Sec. 7408.

(1) A trust may be created to provide for the care of a designated domestic pet or animal alive during the settlor's lifetime. A trust created under this subsection terminates on the death of the animal or, if the trust was created to provide for the care of more than 1 domestic or pet animal alive during the settlor's lifetime, on the death of the last surviving animal.

(2) A trust authorized under this section may be enforced by a person appointed in the terms of the trust or, if there is not a person appointed in the terms of the trust, by a person appointed by the court. A person that has an interest in the welfare of an animal for which the trust is created may request the court to appoint a person to enforce the trust or to remove a person appointed in the terms of the trust.

(3) Property of a 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 trust property exceeds the amount required for the intended use. Except as otherwise provided in the terms of the trust, property not required for the intended use must be distributed to the settlor, if then living, or otherwise to the settlor's successors in interest.