Clipping horses removes their natural insulating coat, creating welfare responsibilities for owners to provide appropriate rugging and shelter.
Clipping transfers thermoregulatory responsibility entirely to the owner. A clipped horse has no capacity to maintain body temperature without human provision of appropriate rugs and shelter. This creates a welfare obligation that must be consistently met - a clipped and under-rugged horse suffers genuine cold stress. Choosing minimal clip patterns that match work level reduces this welfare dependency.