I can relate a story about my cat, a few years ago. I like to make sure that my cat(s) are "house" pets.....and take precautions to keep them in. One day, one of my cats, somehow got outside......and sure enough, went into the road. Fortunately, she was only nicked at the top of her hind leg, by a car that had to swerve a bit....(I'm grateful to that driver).....My cat was stunned and I picked her up gently and brought her in the house, to check her over thoroughly. She was strangely calm and I noticed where some of her fur had been pulled away and she had a small open cut. I cleaned it up with some peroxide and cotton and placed her on the floor by her food and water. As soon as her paws hit the floor, she was off to go upstairs. I went to check on her a while later and it took me forever to find her. She had found herself her own "recovery area," under a table in the bedroom and was comfortably curled up, licking her wound. I decided to leave her be, due to what I know about cats and how they do this. It is a fact that most cats will find a safe, secluded spot, when sick or injured, to allow for self-care and nature, to takes it's course. They prefer not to be bothered and they do not even eat, for a few days. I checked on her a few times each day, and just spoke softly to her and let her know I was there. I worried about her not eating, but decided she must know best.
Sure enough.....in about 4 days, she emerged, stretching big and looking around. She went over to her food and water and consumed it all. Jumped up on my lap and I could hear her purr.....she looked up at me, as if to say, "I'm all better now, Mom!"......There might be a subtle message in there, for humans?