hm, I dont think it will make the difference, but you have a dec. # 266 in the code, try
Code:
public GiantWolf( string name ) : base( name, [b]0x10A[/b], 0x3B2B, AIType.AI_Melee, FightMode.Closest, 10, 1, 0.2, 0.4 )
You might want to make sure your clients really reading the verdata too. Try making an animal in game, pull its health bar out, and in its properties, change the body value ID to the 266, or 0x10A. Keeping the health bar out will ensure if its invisible, you can still delete it, or target it.
And, Im sure your not using it, but the 3D client wont read a verdata.mul file.