My brother has cats that are so indifferent to each other. One would meow if you show the slightest attention to it or even touch it, the other just keeps wanting affection and often you scratch it's back in a certain spot, he loses control altogether and goes on a licking/biting maneuver, depending on how hard/fast you do it! I usually don't see them very often as my interest in felines has wain greatly over the years.