We recently adopted 2 kittens. One is a 4month male & the other is a 6 months female. Both have been fixed. They have been getting along great. They play together, eat together, sleep together. My husband & I came home the other night & noticed Lexie(female) was not her usual self. She didn't want to play or eat. Then we noticed she was favoring her left leg. I'm guessing that while we were gone, they were playing & she hurt her leg. There isn't any swelling or bite marks. But when Kobe(male) approaches her she will become lifeless. She has hissed at him a couple of times. He doesn't understand why she won't play anymore. She is eating & using the litter pan. Then she goes back to sleep. Will she eventually get back to her active self? It hurts me to see her this way.