I don't know how I didn't foresee this issue. I am a first time chicken owner who got 4 EE chicks (now I've learned they are NOT Ameraucanas) about 5 weeks ago. Since the weather has been sunny and mild recently, they've been spending most of the day either free-ranging outside in my large backyard (supervised), or in their Eglu coop and run when I'm not outside. Though chickens are not technically legal in my residential area, I got the blessing of all my immediate neighbors to have them. One next door neighbor happens to have a hunting dog named Blue who enjoys quail hunting. I guess today, Blue was outside, and my chicks were outside, and the chicks were scratching around along the fence line between our houses. That afternoon, I put them back in their coop when I went back inside the house. A few hours later, I go outside to check on them and notice a large pile of dog poop in one of my flower beds and all the chicks cowering in the nesting/roosting box of the coop. I was baffled because I have 6 ft. vinyl fencing all around, and all my gates were locked. Soon after, the mystery was solved when I saw a large hole dug under my fence behind some raspberries. Blue probably got a nice whiff of chicken when they were scratching by the fence, and he couldn't control himself! Dug into my yard and terrorized the poor chicks. Fortunately, he couldn't get into the Eglu, so they were all scared, but untouched. Now I've got to find a way to keep him from getting into my yard again!