Curious boy opening a door in a colorful kids room

Cute small kid standing in front of a closed door inside a colorful kids room, 3D cartoon animation style, bright colors, soft lighting, cinematic view. The kid looks curious and a little scared. He slowly reaches his hand and opens the door. Realistic door opening motion, creaking sound effect. Suddenly, a cute small puppy runs fast out of the door toward the camera, happy and energetic, tail wagging, adorable face. The kid gets surprised, then smiles and laughs. The puppy stops and looks friendly. Kid hugs the puppy with love. Pixar-style 3D animation, ultra smooth motion, expressive characters, emotional and fun kids moment, colorful environment, depth of field, soft shadows, high quality rendering, 4K resolution, YouTube Shorts vertical format, happy ending, cute and funny atmosphere. Sound effects: door knock, door creak, puppy running, cute bark, happy kids music.