Dogs are the ultimate pattern readers. They know time, they know small movements, they see and hear any and all predictors and signals of: this equals THIS! They know when you do this it means that. They know that right after this comes...
It's part of the fun and the challenge of living with dogs.
:) Do anything for an extended period and you can bet your dog will come to expect it.
And not only will they come to expect it, they'll also start to anticipate it. Their clocks will typically run a bit faster than yours. If you feed them at 7pm every night, their dinner alarms will go off at 6:30...or even lots earlier!! If you walk them first thing in the morning, you better bet that your "first thing" will get earlier and earlier.
Here's how I've gotten around this stuff. My guys will sleep in as long as I do, and they don't anticipate breakfast or dinner. How? Because I don't adhere to a schedule. They go out every morning at a different time. They get fed breakfast and dinner at different times. My schedule fluctuates, and we all just roll with the punches.
I didn't do this on purpose, it just happened naturally - but I started to realize the value in it. Less frantic, excited, pleading dogs!
:)
Of course you can start to think about this for many of your daily interactions with your dog. You won't always be able to bamboozle them - or break the patterns in everything - but I bet there's some you could.
Switch things up. Keep them guessing. Change your schedule. Change theirs. Start to see how your dogs read and anticipate cues and patterns and you might just be able to sneak in some more sleep on Saturday morning.
:)
P.S. Full confession: since I've been traveling a bunch and the TGD girls have been feeding my guys - and because the girls have been on a schedule - I'm having to break the feeding frenzy anticipation myself! (That's how fast this stuff gets created!) But I know in a week or two Manny and Belle will be back to their old selves, and not knowing (or expecting!) when it's "time"!