OBJ 3D models often have broken animations when shared because the OBJ format doesn’t natively store animation data (like keyframes or skeletal rigs). - OBJ is built for static 3D elements—vertices, faces, textures—so any animation data gets lost when saving or sharing as OBJ. - To preserve animations, use formats like FBX, GLB, or USDZ instead—these support motion data and keep animations intact when shared. In summary, OBJ’s static design causes broken animations; switching to an animation-friendly format fixes the issue.
