Most predators have the instinct to kill and will kill more than they eat. However, some try to store extra meat under ground/leaves. Raccoons are smart and not 100 percent predictable. One time something got caught in my havaheart trap that chewed through the supposedly unchewable metal. Later a huge raccoon was caught in the same trap missing teeth. I believe he sacrificed his teeth for freedom. Look at a raccoon skull online and you'll see they have very powerful jaws. When the raccoons got in the coop it was a group. Young ones climbed all over the coop and found a loose weak spot in the wire netting. Raccoons leave a mess with they way they kill and eat, droppings and greasy footprints. Look at the height of the holes then imagine the height of an animal that would comfortably stand to make the hole. I had rats chew wood fencing at ground level but made much larger holes than they needed to get in. So say a rat gnawed a hole to get the grain another animal like a raccoon, cat, possum whatever will take advantage of it the same night it appears. I have wildlife cameras running and see multiple critters checking my coops at. Dogs will spend a long time, as in hours trying to get in. Most wild predators are quick opportunists. I've measured times hanging out. Individual dogs by far will actively tear up coops to get in staying up to 2 hours, however most dogs will spend 5 minutes or less. Wildlife, other than rats disappear almost as soon as they show up unless they see a weakness they can exploit. I had decade predator free coops and then raccoons and dogs did my flocks in. It's probably a good idea to do a yearly coop safety check as wood rots and metals rusts. All said I had an extremely hard time pit bull proofing a coop. The pit bull pulled corrugated metal sheets apart to get in.