What is "animal imagery"?

One of the well-known facts is that ancient people in Africa used the image of animals a lot in their art to transmit the special meaning of the animal’s character and the way it cognates with the person who owns this thing. The image of animals on different things shares with us the unique contents that the art product carries inside and how deep African people felt other people to chose animals with such a precision. For example, a dog's skull on a African sculpture form means guardianship and surveillance. A dog is believed to help, because is warns people by barking that a stranger is coming or that the danger is close