Sport has ALWAYS been the sweetest, most loving, kitten. I know that it is difficult to match a cat's age to a human's, but I have looked at several charts. Sport is now 13 weeks old, which would put him at a little over 2 human years old. He has turned into a terror, an absolute little jerk. Is it possible that cats go thru the terrible 2's like humans...or is he just being difficult???? NOTHING WHATSOEVER HAS CHANGED in his living arrangements !!! Thanks for your input.