
26/06/2025
Over the last century, selective breeding has significantly altered the Bull Terrier's anatomy. Early 1900s Bull Terriers had proportionate skulls, lean bodies, and long legs—traits suited for agility and function. Modern Bull Terriers, bred for show standards, now display an arched "egg-shaped" skull, shortened snout, thicker neck, deep chest, and a stockier build. These changes, driven by aesthetic preferences, have introduced health issues like dental misalignments, breathing difficulties, and skeletal stress. The transformation is a clear example of how human-directed breeding can reshape a species' biology, often at the cost of functionality and health.