I notice blood on the ground, then on her foot, Her arm pit going down towards her foot is ripped open, about 4 inches long, skin is ripped open. I can see her muscles and some fat, no major blood vessels are broken so she is not still bleeding, but there is a gaping hole. I cleaned her with diluted soapy water and doused her with iodine. Is this her air sac? THe skin is not very close together because of length of wound. Do I need to sew her skin back together? The skin is very thin and tissue like in this area. Please advise if I need to stitch or will this heal if I keep her clean?? I have no idea how this happend, it looks like very fresh blood and I did not hear any commotion. Thank you!!