A neighborhood dog would have to get over a 4 foot fence to get into our yard, only to access a compost pile with fruits, vegetable and weed scraps. Our own standard poodle only goes out on a leash now, after killing a month-old chick some weeks ago. He is not allowed near the chicken coop or compost pile. This has to be an animal that is either small enough to go though fence slats, or that is enough of a climber to climb the fence. Likely possibilities are: raccoon, skunk, muskrat, fox, feral cat (all have been sighted in backyard or vicinity in last 2 years)