The Orange Boy is at least 18 years old (as near as we can figure). And the little kitten isn't quite a year old yet (she's got a couple months to go yet)
My wife has 2 other cats also and these two have been inseparable since Silly Cilla arrived at our front door on a freezing morning late last October. Kitty Kitty, the old one, has put up with her pushing her way next to him since nearly day one.
That cat looks like the caterpillar from bugs life.