Here is a "frankensteined" Bactrian camel which started life out as a horse. This is about as good as it's going to get without getting into changing the skeletal structure which is necessary to really do the neck right. However, to do so would cost about $300... if you have the budget for this, we can get you a camel that's really as good as the horses are.
We're putting it here in the User Objects forum as it's not quite up to our standards to be an official FrameForge object...