We have 5 barn cats who dont bat an eye at the chickens. When they were chicks we had to keep them protected, but now that they are big, the cats dont seem to think twice about it. We did have a couple of cats who were forever stalking them, so they found a new home before they coudl do any damage, so I think it depends mostly ont he cats. Ours are all excellent hunters, but seem to understand the chickens are no- nos- I think partly because when they would skulk aorund the brooders we would holler at them and chase them off. Now, they get locked in the barn at night, where we have the chickens in predator proof pens. Our grown Narrangassett turkey chooses to sleep in the hayloft, curled up with the cats. We have zero issue with mice in the feed, and should any weasel or other foolish predator find a way into the barn, I suspect they would have real regrets!