Hello. I'm a new chicken owner, and I have 4 hens and 1 Roaster. One hen is sitting one some eggs, and I'll be expecting chicks to hatch in few weeks. My coop is not big or fancy, but I keep it clean. For the new chicks (witch I plan to keep), I wanted to expand my fencing and make a bigger coop. My backyard is big, a few BIG trees providing shade. now theres a area I want to fence and be the new place for my Chickens. but it's a big spot and I don't think I could put a mesh roof over the whole thing. So i was thinking if it's even needed that I put up a mesh roof. cause it would be really convenient if I didn't need to. So would it be okay not to put up a mesh roof, or would that be too dangerous, cause I had a raccoon kill a few chickens before. I'll put the chickens in the coop at night and I was also thinking of getting a dog, and keeping him with the chickens. I went to a Chicken farm before, and the Lady there had just a 4 foot fence around, and a big coop. One dog kept 200 chickens safe. He stayed in the fence or around at all times. Do you guys thinks It's to risky or would safe if a had a big dog with them and kept them in the coop at night? Thank you.