Vanilla Zombie Tame

I know Mcreator sucks but how can we edit vanilla mobs by using forge? Only thing we need to do is copy paste wolf code to zombie. Also how do you make zombies to not attack you if you have tag?

Many people making very impossible mods, they added physics shadows real 3d models to game. What is their trick, we can steal code but many times code are tied to other codes. I completely edited pixelmon and in there all class files was requiring each other to work; it is like dividing one thing in to 20 parts and follow all files at same time to understand. By the way right now Mcreator is enough for making a turnbased minecraft mod.

Klemen why dont you teach forge just write entire forge library and write some examples. You can also teach us how to create new prodecures and develop Mcreator. Also where is vanilla models; how to replace them or steal them or mimick them where are animations?

I just noticed i am being very rude to klemen by saying mcreator sucks