Bull Terrier breed evolution header: 1915 old type vs 2016 modern show type comparison showing 100 years of selective breeding
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The Bull Terrier: How 100 Years of Breeding Changed This Iconic BreedBull Terrier comparison 1915 vs 2016
From the lean, athletic “gladiator of the canine race” to the modern dog with the unmistakable egg-shaped head —
the Bull Terrier is one of the most dramatic examples of how selective breeding has reshaped dog breeds over the last century.
1915 – The Old The Bull Terrier: How 100 Years of Breeding Changed This Iconic BreedBull Terrier comparison 1915 vs 2016From the lean, athletic “gladiator of the canine race” to the modern dog with the unmistakable egg-shaped head — the Bull Terrier is one of the most dramatic examples of how selective breeding has reshaped dog breeds over the last century.1915 – The Old TypeThe dog in the top photo represents the early 20th-century Bull Terrier.
These dogs were:
Leaner and more athletic in build
Had a longer, more functional muzzle
Possessed a strong, graceful profile with better overall proportions
Bred with a focus on working ability, agility, and power
At the time, Bull Terriers were still closer to their roots as crosses between bulldogs and various terriers. They were prized for their courage, tenacity, and versatility.
2016 – The Modern Show TypeThe bottom image shows a contemporary Bull Terrier. Key changes include:
The famous egg-shaped head (highly convex skull with a Roman nose profile and almost no stop)
A stockier, more muscular, and compact body
A heavier overall appearance
Exaggerated features that have become the hallmark of the modern show ring
This transformation didn’t happen overnight. Over decades, breeders prioritized the extreme head shape and robust build to meet evolving breed standards set by kennel clubs.
The dog in the top photo represents the early 20th-century Bull Terrier. These dogs were:
Leaner and more athletic in build
Had a longer, more functional muzzle
Possessed a strong, graceful profile with better overall proportions
Bred with a focus on working ability, agility, and power
At the time, Bull Terriers were still closer to their roots as crosses between bulldogs and various terriers. They were prized for their courage, tenacity, and versatility.
2016 – The Modern Show Type
The bottom image shows a contemporary Bull Terrier. Key changes include:
The famous egg-shaped head (highly convex skull with a Roman nose profile and almost no stop)
A stockier, more muscular, and compact body
A heavier overall appearance
Exaggerated features that have become the hallmark of the modern show ring
This transformation didn’t happen overnight. Over decades, breeders prioritized the extreme head shape and robust build to meet evolving breed standards set by kennel clubs.
Why Did the Bull Terrier Change So Much?
Dog shows and official breed standards play a major role.
Traits that judges reward — such as the perfectly rounded, smooth head — became heavily emphasized. While this created the unique look many people love today, it has also sparked debate about health and function.
Some concerns associated with extreme breeding in Bull Terriers and similar breeds include:
Dental and jaw issues due to the shortened muzzle and rounded skull
Skin problems
Potential breathing or thermoregulation challenges in heavily exaggerated individuals
Reduced athleticism compared to earlier types
Old Type vs Modern Type – What Do You Prefer?
Many enthusiasts now advocate for “old-fashioned” or working-type Bull Terriers that retain more of the original athletic build and longer muzzle while still keeping the breed’s signature personality and charm.Question for readers:
Do you prefer the classic, lean 1915-style Bull Terrier or the bold, modern 2016 show type? Why?
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