Our entire run is hardware cloth--buried about a foot underground. We've got poultry netting on top. But the fence is just under 5 feet tall, and my cat routinely jumps up to the top rail. (We have 2x4s along the top--flat side up. In retrospect, probably not the best idea.) I wonder what, if any, predators could possibly jump or climb into the run. We have coyotes, skunks, possums, and raccoons. I've heard rumors of cougars, but not too close to here. No bears. Are my girls safe--or is it only a matter of time?