If you are kept in captivity, will it bend your legs?

Usually not. Under normal circumstances, the hind legs of the border shepherd are straight. If the hind legs are bent, it is likely to be calcium deficiency or skeletal dysplasia. Give him some calcium to try. Border shepherd's hind legs are long, wide and muscular. The knee joint angle is appropriate, and the hock joint is firm and low. The hind limbs are well-boned, straight and parallel to each other, with very slight cattle limbs.