It is pretty small, but it makes more sense to me that an army had the skills to tame such a beast! I mean, I know it's Warhammer fantasy, but even then, I still think that GW has gone from some relatively sensible monsters, the old deathclaw, some of the old dragons, etc., to some absolutely ridiculess gargantuans, such as the new deathclaw model.
I'm not saying I don't like the new models, they are absolutely beautifully crafted, I'm just saying that there was a time in Warhammer when your regiments filled more of the board than your mounted lord, general, wizard etc.
To make it short: I really like the look of that Chimeara, I think it will be a great addition to your already impressive collection!