Hi. My indoor/outdoor cat came in last night injured. She has what looks like a skinned strawberry spot on the outside of her knee. It looks like a wound one would get from sliding on concrete--apparently not a bite. I didn't notice right away, because there wasn't a limp, and she jumped into my lap normally. I noticed finally when she began growling and hissing at me, I guess because I was irritating the wound that I didn't know was there. Once I saw blood on my arm, I realized she was hurt. I figure she must have tangled with a car somehow to get that kind of scrape-looking wound. I worried, but doubt she has broken bones, because she jumped up and down from my lap, the bed, and climbed into and out of a cardboard box. Her respiration was rapid, 50-60 bpm, but not abnormal for feeling pain and stress, I think. She takes occasional deep breaths, so I think her innards are OK, at least no broken ribs. I've seen no blood from her insides, only at the wound; so I stopped worrying so much. The next day, she is limping and not putting as much weight on it, but I know from experience that injuries like that do stiffen up the next day. She still jumped on the bed and climbs in/out of the cardboard box. I helped her down from the bed, though, as she doesn't want to put her full weight on it. She sleeps on both sides, which also tells me that she probably has no serious internal injury or broken bone. However, I'm worrying again because she is lethargic today, staying in the cardboard box sleeping all day, she has not eaten at all in 24 hours, and she has not asked to go outside, which is always her main goal in life. She has urinated in the litter box normally, but as she hasn't eaten, she also hasn't pooped, which I want to see to make sure there is no blood. Is her behavior normal for experiencing such a seemingly minor trauma just to her skin, and maybe bruised bone or knee joint?