Hi, my hamster recently died really randomly, she was 2 years old and one morning I had her out of her cage and she was running around and being her usual energetic self then that evening I noticed her just sat in her cage shaking and when I tried stroking her she just fell over, I got her back up and left and kept checking on her, she then went to bed but the next morning she had died. Any ideas what might have caused this, it just seemed so weird and sudden. Also when I took her out to bury her I noticed her nose and paws had some blood on them.