I dare not admit that I have depression. Black dog, representing the group of depression, originated from Churchill's famous saying, "The depression in my heart is like a black dog, which will bite me every chance." The word "black dog" originated in Britain. In today's society, depression has become a major mental illness covering the whole world. If you become the object of depression, please cherish their screams and their trust. This is their last courtship in this world.

Black cat is not a breed, but a cat with black hair. In different regions, the symbolic meaning of black cats will be different. In ancient China, the black cat was a symbol of good fortune, and ancient books also recorded that the black cat was a town house to ward off evil spirits.