A hyperrealistic Australian Cattle Dog portrait with exaggeratedly muscular physique and defined contours, sporting a vibrant blue-and-red mottled coat pattern reminiscent of classic comic book coloring. Micro details: 1) Intricately rendered heterochromia with one piercing emerald green eye and the other a striking sapphire blue. 2) A playful smirk subtly curving the dog's lips, showcasing slightly elongated canine teeth. 3) Noticeable texture in the short, wiry fur, capturing the distinct bristle-like quality characteristic of the breed.