Dogs and oxen can be requisitioned to propel army vehicles.
Many stupid laws have to do with advancing technology. To mention just one: a provision in a code concerning the military, dating back to 1939, regulates “beasts of burden (horses, oxen, dogs, etc.)” that can be requisitioned “for vehicles employed by the army”.
No one may tie their pet dog to the roof of a car.
9.36.150 Carrying animals on outside of vehicle. No person driving a motor vehicle shall transport any animal in the back of the vehicle in a space intended for any load on the vehicle on a street unless the space is enclosed or has side and tail walls to a height of at least 46 inches…