Imagine living in a world where you didn't speak the language. Where things were controlled for you buy creatures who you could not verbally communicate with. You would likely do your best to follow what you thought they wanted but unless they were very clear in showing and demonstrating things to you, it would be a horribly confusing experience. If there was any confusion on what they wanted you would do your best to comply and often, simply because you were guessing, get it wrong and get in trouble. Welcome to a dogs world.