My indoor dog, I trust cats with. My livestock guardian? If he can, he would catch and probably eat cats wandering across his pasture. If I had barn cats, I would be able to train him, but I guess it keeps away neighbor cats from stealing chicks and poults. My only predator kills this year were from a Cooper's Hawk, he snagged a pullet that flew up with fear when he entered the grow out pen. I was pretty mad about that! And, my livestock guardian dog is still young since I lost my first one, so he really loves chasing poultry, and we are working on that. He is so very big, just putting his paws on a bird will smoosh it. He is 11 months old and 170 lbs already! He is a Boz dog.