Since raising my three chickens since they were a day or two old, I've always worried about our cats bothering them. Once the "girls" moved out to the coop/run I worried that if we let them out to roam, the cats would attack them. Both our cats are girls and VERY interested in birds. Imagine my surprise the day I watched one of my BO's chase one cat around the backyard! The other cat will just lay there and lean away if one of the girls gets too close - but she won't run because she knows the chickens will chase her. Yesterday, I had to call off a chicken because she wouldn't leave the cat alone. LOL! Nothing to worry about here. It's quite entertaining to watch them at it too!