US Patent 7481180 Animal feeder

An animal feeder includes an open ended food container that is hinge mounted at a normal inclined position on a ground support. The container pivots upwardly about a fixed horizontal transverse axis when the animal tries to remove the container from the support. This unnatural, upwardly pivoting movement discourages further attempts to remove the feeder, and the animal, thus discouraged, continues to feed at the site.