My boys (cats) are very faithful to me (read: mamma's boys). Mikey and Madmardigan so much so that they won't come out for hours if there are strangers about. Sheldon is more social and will take a scratch at the base of his tail from just about anyone.
I was given a George Carlin quote calendar for Christmas last and this is today's (very true) entry:
"cats have a quality I find admirable: blamelessness. When a cat makes a mistake he doesn't accept responsibility or show embarrassment. If he does something really stupid, like jumping onto a table and landing in four separate coffee cups, somehow he passes the whole thing off as routine. Dogs aren't like that. If a dog knocks over a lamp, you can tell who did it by looking at the dog; he acts guilty and ashamed. Not the cat. When a cat breaks something, he simply moves along to the next activity."