I'm a dolphin!

In a dimly lit, cluttered room, a large, muscular woman in a purple dress stands with arms outstretched, then turns and walks away. In the foreground, a small, yellow dog-like character named Jake stands alone, initially looking up with wide eyes, then raises his arms in a shrug, and finally transforms into a yellow dolphin shape, leaping into the air. Other characters are visible in the background, including a boy in a blue hat and a small, yellow creature with a long tongue.