My Louise was attacked by our 9-month old puppy Otto....I have a large coop but every now and then I let her and Thelma free range in the yard while i am watering my plants..needless to say i went in to answer the phone and when i went out the door he busted past my legs and beelined for the girls...he chased her back in the coop and clamped right down onto her mid section from behind..I had to place some hard blows to get him to release....her left leg is outstretched and will not relax, it has become cool to the the touch...i treated her wounds and placed her in a laundry basket under a heat lamp....any suggestions? i am new to raising chickens...i am very concerned about her leg being cool versus the other leg being warm...this is so upsetting, thanks for any input...