I have 2 black Labradors. They are inside most of the time. They lounge about as Labs do.
Peggy knows how to get their attention. Her main cage is on a large stand with wheels. The door is always open in the daytime, with a perch for her to stand on.
She loves toast with heaps of butter but doesn't eat the crust of it so she will stand on her perch, eat off the butter then drop the rest to the floor. The dogs are at attention, you can imagine them, 2 great big black Labradors stomachs, too much for them, it is a race to get to the toast first. Peggy just stands on her perch and watches them. Then she will go inside and get anything she doesn't like to eat in there and throw it out, she actually flings it at the dogs and hits them with the stuff

they don't know which way to go and who of them is going to score the food. Peggy just sits and watches!!!