grandson talked us into getting into chickens ...he lives an hour away and promised grandpa that he would take care of them...we pick him up and he spends and hour with them and we drives him home. So 4 hours of driving and one hour of chicken playing...bought 4-3 day old 2 orphindons and 2 autalio something or other...he knows what they are. Now about 10 days old. Im socializing them with me and my giant Bernese Mountain Dog. He loves them. And they already respond to him. He’s a gentle 120 pound giant. I want to make sure that when they are in the yard, he doesn’t terrorize them..or vice a versa. Bought a 4x4 coop and 4x4 run from an Amish builder...still very cold here in Delaware but I’m a long way from outside anyway. Do I provide any supplemental heat when I do put them out? Sand or wood chips? I think I’ve got the predator thing figured out. We had ducks who were preyed on by opossum, fox and raccoons and 3 of them finally had it and moved to our 5 acre pond...where they have been for several years. So this chicken coop is well made to keep out predators. Look at the size of his paw compared to the size of Nugget.