In this dissertation, it is considered how animals experience the world around us and in particular, how as social beings, they recognize each other, locate food and have a capacity for self-awareness. All this, of course, requires at the outset some appreciation of how the senses work and how they differ between species. An important starting point in considering the way we and other species sense the world is the simple statement that whatever sense is being used it is merely providing an interpretation of the outside world. In short, we do not sense the world as it is but merely as our sense organs interpret it within the limitations of their design. From an evolutionary standpoint, of course, any species develops only the specific senses, ranges of detection and levels of sensitivity that are required for its members to interact successfully with the environment and survive. There are five primary types of senses in most species, and they depend on the nature of the habitat and which requirements these habitats place in front of their inhabitants. Some species of animals can perceive the world in ways people cannot.