The dog skeleton model is a biological teaching tool used to showcase the skeletal system of canine animals. This model is usually made according to the skeletal structure of real dogs, including skull, spine, ribs, limb bones, etc. In biology teaching, dog bone models can help students intuitively understand the structure and function of mammalian bones, learn the names, positions, and connections between different bones. By observing and operating models, students can grasp the basic principles of animal movement and understand how bones, muscles, and joints work together to achieve movement. This model is a very practical auxiliary tool in biology and comparative anatomy education, which helps to improve students' professional knowledge and practical skills.