Animals and Humans, all evolved differently, from different ancestors and with different strength and weakness to help them in surviving the world.
Different species have different ways of perceiving the environment. Even in humans we have male psychology and female psychology, we both see world differently. If we don’t understand the psychology of the opposite gender then we won’t be able to communicate properly leading to a problematic relationship.
Dog is a different species with a different psychology and to have a deep connection with your dog, you must understand the psychology of dog as a different species altogether.