A pop art and retro American printing style poster, featuring a white background collaged with high-saturation color blocks in red, yellow, blue, and green. The main visual is a half-body portrait of a dog from a photo, processed with two-tone halftone dots, centered in a symmetrical composition. The main title combines colorful hand-drawn letters "Puppy" with the slanted handwritten phrase "DOGS RULE THE WORLD". Slogan text is decorated with red-blue contrasting strokes and underlines. Surrounding elements include graffiti symbols, outlined silhouette figures, and slogan blocks, creating a free-collage aesthetic with a strong halftone printing texture. Color blocks present a lively, jumping rhythm, while the overall vibe is humorous, retro, and playful—highly reminiscent of American TV comedy promotional styles. The image ratio is 2:3.