Hi, my name is DeAnne. I have 4 cats right now. 3 of them are sibling kittens about 5 months old. Yesterday one of them, April started limping. I have no idea what happened or why. She slept most of the day after that. Well this morning she is a little better and now her sibling is limping. Are they playing too roughly? They have started climbing on high counters and shelves, does it sound like a sprain? They are acting fine, just limping. I just thought it was weird they are both limping.