Where are you getting this information from? Originally, wolf form had white or greyish wolves and only the highest level spells turned you into a black wolf. As far as sitting goes: that didn't happen until Luclin when the models were upgraded.
These are the upgraded models that you are probably thinking of:
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These came in during the Luclin era, which is past the scope of this server.
These are the original models that you should be seeing. They have no animations for duck/sitting.
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