small, cute light brown puppy named Robin, with white markings on his chest, paws, and underbelly, training intensely. Robin is standing on his two hind legs like a human, punching a heavy bag with focus and determination. He has slightly stylized, exaggerated features but retains realistic proportions. Robin’s fur shines as he works hard, and his expression is intense. He is wearing light brown boxing gloves and light brown boxing shorts, which match his fur color. The room has wooden floor and light brown painted walls, and the lighting is dim and intense, adding to the gritty atmosphere. Cinematic, HD.