This is a creative and humorous advertisement poster featuring a woman in a purple dress walking a small dinosaur on a city street. The dinosaur is on a red leash, appearing docile and playful, creating a striking contrast with the modern urban environment. The background shows a European-style building with bright sunlight, giving the scene a light and cheerful atmosphere. A speech bubble above reads: 'They would still be here if they hadn't caught a cold,' suggesting this is an ad for a cold treatment. The ad was created by AstraZeneca to promote its medication in a playful and imaginative way. The image blends reality and fantasy, showcasing a highly creative visual concept.