How do I change the player model (and texture) to a vanilla mob model (like a sheep)?

[chrisicrafter27]

Could someone explain me how to change the player model to an existing vanilla mob model?

[Hipposgrumm]

I suggest opening up some of the various morph mods out there and seeing how they do it. I don't think it's that complicated, unless it requires mixins (which are complicated until you know how to use them).