Abstract: A tamper resistant animal guard for a drain pipe outlet having self cleaning prongs for preventing the admission of small animals while allowing sticks, leaves and other debris to flow from a drain pipe is provided by the utilization of a plurality of individually rotatable prongs axially disposed on an axle or shaft. A mounting bracket for mounting the axle or shaft is preferably of a flexible material to conform to the inside circumference of the drain pipe while engaging the ends of the axle or shaft which extends substantially across the diameter of the drain pipe.