Does a dog have an external or internal skeleton? - briefly
A dog has an internal skeleton. This is typical of all mammals, including humans.
Does a dog have an external or internal skeleton? - in detail
Dogs, like all mammals, possess an internal skeletal structure. This means that the bones and cartilage that make up their skeleton are located within the body, providing support and protection for vital organs while facilitating movement. The skeleton of a dog is composed of two main parts: the axial skeleton, which includes the skull, vertebrae, ribs, and sternum; and the appendicular skeleton, which consists of the limb bones such as the humerus, radius, ulna, femur, tibia, and fibula. These bones are connected by ligaments and surrounded by muscles, tendons, and other soft tissues. The external appearance of a dog is defined not by its skeleton but by its skin, fur, and musculature, which give the animal its distinct shape and form. The internal nature of a dog's skeletal structure is essential for its survival and adaptability, allowing it to move efficiently and protect its vital organs from external impacts.