We had a dog that knew the best place to stand during dinner was under the high chair. He and our young children bonded very well.
We had a cairn terrier/poodle mix that wouldn’t eat his dog food when he was younger.
Then when he was 5 years old we got another smaller pekapoo puppy who became dominant.
The smaller dog wouldn’t eat his dog food, but would stand over it and guard it, because now that he had competition, the older dog wanted all he could get.
Soon we noticed that the older dog would eat his food then run to the front door barking as if someone was there.
The small dog would, of course, follow suit, abandon his food and bark at the door.
The old dog would race back and wolf down the little dog’s food.
The little dog never caught on.