The ability to introspectively determine one's relationships to the environment and other people remains an essential self-awareness component. All animals cannot have it, but human creatures do. Only humans have shown such a capacity from the many animals tested. Animals such as orangutans, chimpanzees, gorillas, bottlenose dolphins, elephants, orcas, bonobos, Rhesus macaques, and European magpies are examples. The Canidae family of animals, including dogs, show subtle displays of self-consciousness.