In quadruped animals the dorsal surface is the?

In quadruped animals, the dorsal surface is called the back. It is the upper surface of the animal's body, extending from the head to the tail. The back is typically covered in fur, skin, or scales, depending on the species. It is an important part of the animal's body, as it provides protection for the internal organs and muscles, as well as providing support for the animal's body weight.