A vibrant cartoon with colours and smooth animation. Create a 20-second continuous 3D cartoon animation for children. Show three cute children and one adorable brown-and-white puppy playing together in a colorful sunny park. Keep the exact same characters, faces, clothes, colors and animation style throughout the entire video. The puppy suddenly notices a red ball, runs toward it, picks it up and happily runs back to the children. The children laugh, clap and play with the puppy. End with all four characters sitting under a large tree, smiling and enjoying the beautiful park. Smooth continuous animation, natural character movements, expressive faces, cinematic camera movement, colorful children's cartoon style, cheerful Hindi children's voice-over, playful background music, birds chirping, 9:16 vertical format, exactly 20 seconds. No character changes, no outfit changes, no scene-style changes, no scary elements, no violence, no text, no waterma