The Corpse Grinders  (1971)

Theatrical Release Information:
The Corpse Grinders

When the owner of Lotus Cat Food learns that his primary financial backer has pulled out upon completion of their new processing facility, he gets his revenge by stuffing the poor dope into a meat grinder (which looks for all the world like a cardboard box) and packing the end product into the next batch of cat-food cans. Lo and behold, this particular batch flies off the store shelves, coaxing the enterprising fellow to gather up more human cutlets. To this end he convinces a mortician to use his patented pork-flavored embalming fluid, then later packs the preserved bodies off to the grinder (fully dressed!) to make more kitty treats. All goes well until the plan triggers an unforeseen side-effect: the Morrises of the world have suddenly developed a taste for human flesh, and they aren't too finicky about where they get it. This leads to lots of silly scenes of people rolling on the ground shrieking and holding protesting cats to their throats. Grade-Z-quality filmmaking (and darn proud of it) from Ted. V. Mikels, the man responsible for Astro Zombies and Blood Orgy of the She-Devils. ~ Cavett Binion, All Movie Guide