What nutrients are essential for fueling a Wire Fox Terrier's characteristic bursts of speed and digging habits?

Energy density provided by quality fats and proteins

The Wire Fox Terrier was historically bred to be a tireless working dog, resulting in a high metabolic rate that demands continuous, potent fuel to support its high activity level and enduring stamina. To sustain their characteristic bursts of speed required for hunting and their persistent digging habits, the diet must be dense in highly efficient energy sources. Quality fats and proteins are recognized as the superior fuel components for meeting these intense caloric demands, allowing the breed to maintain lean muscle mass and high endurance without relying on empty calories. When assessing food suitability, the focus must remain on the energy density delivered by these macronutrients rather than simple volume.