Hello! I'm a first time snake owner and I've been feeding my snake large live mice since I got her. I bought a small frozen rat today and I put it in a plastic bag, put it in warm (but not hot) water, and placed a cup on top of the bag so it wouldn't float to the top. It's been about an hour and I just checked on the rat. It's bleeding from the nose. What does this mean? Is it still okay to feed it to my snake?