So what we're going to do is to create another creature and put it (with help by the world editor) onto newbyland.
For the sake of simplicity in this guide I oriented myself at the existing dag creature or "yubo" as it is called in-game. Of Course, the goal of Ryzom Core is not to rebuild the original Ryzom. But in my opinion it will take some time till we have e.g. some truly new creatures as this also relies heavily on source code additions. Until then it should be OK if we create some more samples to get to known with the whole process.
Personally I think the current Georges Editor has much potential but most times I'm kind of overwhelmed by the masses of editable information. So I switched to just open the actual XML files and edit them. I decided to do it for this guide as well which also saves me from making a lot of screenshots. Of course you are welcome to do it all in the official NeL tool!