Mich. Comp. Laws § 96.1

Sec. 1. The council may provide and maintain 1 or more pounds within the city and may appoint poundmasters, prescribe their powers and duties, and fix their compensation; and may authorize the impounding of all beasts and fowls found in the streets or otherwise at large contrary to any ordinance of the city; and if there shall be no pound or poundmaster they may provide for the impounding of such beasts and fowls, by the city marshal, in some suitable place under his immediate care and inspection, and may confer on him the powers and duties of poundmaster.