This is an indoor space. The floor is cement ground decorated with dark gray frosted stripe markings, and a white door is set at the rear of the space. On the right side of the scene, a fully assembled mammal skeleton specimen is placed, supported and fixed by a black metal stand. The specimen completely presents the bone structure of the animal's hind limbs, pelvis, caudal vertebrae and other parts. The overall environment is simple and regular, conforming to the characteristics of a specimen room or biology teaching laboratory.