Tô màu Online: Create an original cute cartoon puppy coloring page for children ages 3–6. The puppy is sitting happily in a garden, with floppy ears, big friendly eyes, a collar and a small ball nearby. Use thick, smooth, bold black outlines, large simple coloring areas, pure white background, no colors, no gray shading, no shadows, no textures, no text, no watermark. Professional children's coloring book illustration, clean printable line art, centered composition, portrait US Letter 8.5 x 11 inches, high resolution.