O-Shamo (large)
A variant of Shamo (Gallus gallus domesticus)

Representative Shamophoto — a dedicated image of this exact morph isn't available yet.
The large Japanese Shamo — a tall, muscular, upright game fowl (males often 3 kg+) with a hard feather, prominent shoulders and an erect 'standing' stance bred from Asian gamefowl.
Keeper tips for this variant
Mature males are highly aggressive and must be penned individually — never house two cocks together, and use tall, sturdy pens that suit their upright carriage.