My cat is quiet. Silently say, "Meow" It's quit subtle. Instead of that, he tap my arm! It's near my shoulder. He stands up and tap many times. You can't ignore it.
He knows there is specially delicious food in the fridge. He keep looking at his plate till I open the fridge's door. When the amount of the special food was not enough to him, within 1 hour he comes again and keep looking at his plate again. Cats are clever!