»Your Pet Cat Will Keep Bringing Corpses of Birds, Mice Home. Here's How You Can Reduce it 3-MIN READ Your Pet Cat Will Keep Bringing Corpses of Birds, Mice Home. Here's How You Can Reduce it Volga2012 / Istock.com. Researchers played with the animals, including with a feathered object suspended from a rope and a wand so that the cats could stalk, chase and pounce, just as they do when they hunt living things. After five to ten minutes of play, the number of dead animals left by the cat in front of their owner's door was reduced by a third.