My daughter has two peking ducks. She's raised them from babies and are two years old. They have a big pen, fully secure and we've never had it compromised. (we also have two chicken pens, hen house, etc). We were gone overnight and came home to find Gossie and Gertie dead. They were blood everywhere in their pen. They had been eaten in the middle of their backs. I've read that most predators eat their heads off or attack at the neck area. The pen is still fully secure. No sign of entry anywhere around. No fur, nothing that we can find. We had a small pen of month old chicks in the front yard. Also a very secure pen and after cleaning up massacre of the ducks, we checked our big chickens and they are safe and secure and accounted for. The babies in the front pen were safe accounted for EXCEPT for one fancy speckled chicken with the top knot. There is no sign of a struggle, no feathers, no sign of the baby chick and no way that it could have gotten out of the cage except if someone opened the pen and lifted it out. What kind of predator would grab the ducks in the middle of the back and kill them and it looks like they were shaken with all the blood everywhere? I'd like to figure it out so we don't loose anymore of the girls pets. Is it possible that the neighbors dog did this and then they just left the mess? I don't know what other kind of animal could have done this. These are HUGE duck. Thank you for any advice. My girls are heartbroken and if I could at least try to figure out how it happened I might could prevent it again. We've had poultry for three years and never had an issue like this. I guess I should add that we live in a suburban community but on an acre with chicks and bunnies and ducks, cat and dogs.