What defines the divergence between modern Field/Working Lines and Show/Conformation Lines?

Answer

Function and aesthetics

Understanding the modern lineage requires recognizing the significant split based on selective breeding goals. While the initial separation in the late 1800s was based on the quantifiable metric of size, the contemporary divergence focuses on two distinct selection pressures: function and aesthetics. Show lines prioritize strict adherence to the established physical breed standard for appearance, whereas working lines are bred primarily for peak performance, endurance, and speed in the field, even if it means less profuse coats or slight differences in conformation.

What defines the divergence between modern Field/Working Lines and Show/Conformation Lines?
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