Mr Beasley, my erstwhile favorite, wakes me every morning around 6-7AM. I'm tired. I don't sleep particularly well, and then he wakes me up.
Now, granted that I got up at that time for 2 years, without fail, every morning, and gave him breakfast.
I have a magnet I found someplace (no, I don't have one to sell you, although I sure wish I did!) that says "There is no snooze button on a cat who wants breakfast" and that is truly what happened this morning. Both of the crunchy bowls were empty.
So, yes, I got up and fed them. Reinforcing the behavior, of course...
Boy! Cats sure know how to train people! :-P