I had 46 chickens they were all out in the yard. 1 dog(known chicken killer) was placed on the chain, 1 dog ( non chicken killer) was loose. I was home next to window reading, heard chicken noice went outside to find 4 dead chickens without a scratch on them. One was kinda flopping around not even dead completely. 4 other chickens completely gone never seen again. Rest of the chickens were hiding in pasture on top of hay ect. And slowly came back....what do you think happened??? Im not sure if my non chained dog was involved she came running from pasture when i came out hollaring...what kills but doesn't eat or damage????