3D animated video: A cute chibi baby girl (pink bob hair, blue-white heart outfit) rides a playful brown-and-white puppy on a Lego-themed train (colorful brick station, bright blue sky, toy train tracks). The puppy starts with slow, gentle steps—its paws rest softly on the train (making tiny Lego-brick sparkles drift), and the scene glows brighter with sunlight. It then accelerates into a lively dash (moving quickly forward along the tracks): its body blurs with motion to highlight speed, the soft fur shimmers dynamically, and faint brick-themed particles scatter in its trail. As it moves, the puppy continuously blows a steady stream of colorful Lego-shaped bubbles (glowing with scene light) that drift upward, wobbling gently with the breeze, before popping softly (releasing tiny cheerful-themed glitter). The baby girl holds the puppy’s head steadily, outfit fluttering slightly, feet dangling above the train, and a bright smile as they dash through the cheerful Lego train scene. Animation style: vibrant, playful, hyper-dynamic—add motion blur to the puppy/train and floating bubbles; bubbles sync with the dash rhythm. 12-second clip, 4K, 60fps (ultra-smooth, Lego-train dash with whimsical, creative interactions).