a vibrant digital artwork of a joyful bullmastiff dog against a colorful city skyline backdrop with palm trees. ai

bullmastiff dog digital art city skyline palm trees vibrant colors joyful expression animal pet portrait urban scenery canine illustration happy graphic design colorful background representation breed life sunset tropical playful loyal friendly nature silhouette modern lover lovers character fun stylized wildlife emotion companion tranquility artwork creativity detailed contemporary expressive relaxed ai generated