Right now your rendering registry for the sophisticated wolves uses direct instantiation (new RenderSophiscticatedWolf), you should be using method references or IRenderFactories.

Like this:
RenderingRegistry.registerEntityRenderingHandler(EntitySophisticatedWolf.class, RenderSophisticatedWolf::new);
You will need to change the constructor to accept a RenderManager as an argument and pass that to the superconstructor instead of getting it manually.