Martian Dice Game

Your mission, Martians, is to swoop down on the pathetic denizens of the primitive planet 'Earth', and to scoop up as many of the inhabitants as you can manage. We are interested in samples of the Chicken, Cow, and Human populations, so that we can determine which of them is actually in charge. The Earthlings might manage to put up a feeble defense, but surely nothing that a small taste of your Death Rays can't handle. Make Mars proud be the first Martian to fill your abduction quota.