Modern realistic cartoon style drawing grayscale coloring page of Dogs enjoying a day at the dog park , grayscale illustration, coloring page for adults, photo-realistic, clean line art, high detailed, no background, white, black, coloring book, sketchbook, realistic sketch, free lines, on paper, character sheet, free lines, masterpiece, high-resolution, vector art, fantasy art, soft lighting, 8K resolution --ar 3:4