3D animated video: A cute chibi baby (curly blonde hair, mint-green outfit) rides a playful brown teddy bear on a rainbow curved track (colorful ball props, grassy playground, bright sunlight). The bear starts with slow, gentle rolls (using the teal ball)—its paws nudge softly on the track (making tiny ball-shaped sparkles drift), and the scene glows warmer with outdoor light. It then accelerates into a lively dash (rolling quickly forward along the curved track): its body blurs with motion to highlight speed, the soft brown fur shimmers dynamically, and faint rainbow-particle trails scatter in its wake. As it moves, the bear continuously blows a steady stream of vibrant ball-shaped bubbles (matching the playground props) that drift upward, wobbling gently with the breeze, before popping softly (releasing tiny cheerful-themed glitter). The baby holds the bear’s ears steadily, outfit fluttering slightly, feet dangling above the track, and a bright smile as they dash through the cheerful rainbow-track scene. Animation style: vibrant, whimsical, hyper-dynamic—add motion blur to the bear and floating bubbles; bubbles sync with the dash rhythm. 12-second clip, 4K, 60fps (ultra-smooth, rainbow-track dash with playful, colorful interactions).