The miniature bull terrier is in every way, except size, exactly like the bull terrier. Bull terriers were first meant to be rough, tough fighting dogs but now exhibit a much gentler, playful personality. The breed can be solid white or colored. The bull terrier's country of origin is England.

When created by lovers of the dog-fighting sport by crossing a bulldog with the now-extinct white English terrier, bull terriers as small as the present day miniature were common. Early in the bull terrier’s history, breeders added some Spanish pointer to the breed to achieve an optimal size for dog-fighting. Because of the variety in sizes that resulted, breeders began to classify bull terriers by size: Miniature (midsize), and Standard (the largest).

Miniature bull yerriers are generally quite healthy. However, several issues such as hearing issue, eye, skin, kidney and knee problems, and allergies; these are all associated with the breed.

Deafness can occur in both colored and white miniature bull terriers. Puppies may be born unilaterally or bilaterally deaf (deaf in one ear or deaf in both ears.) Deaf dogs should not be bred due to deafness being hereditary.http://bullterriershealthuk.homestead.com/deafness.html

The breed suffers from luxating patellas (dislocation of the kneecaps), a common issue which affects miniature breeds. This problem can be fixed with surgery.

Miniature bull terriers can also suffer from bull terrier hereditary nephritis (inflammation of the kidney), which is an inherited autonomic dominant disease.http://www.ncbi.nlm.nih.gov/pubmed/7752574

Miniature Bull Terriers are also susceptible to genetic eye problems such as primary lens luxation (eye dislocation). PLL is a late onset disease that typically affects dogs between the ages of 3 and 7. During September 2009 the Animal Health Trust released a definitive DNA test. This test gives three results: Clear, Carrier, Affected.

The miniature Bull Terrier is simply a smaller version of the standard Bull Terrier. Lovers of the dogfighting sport who wished to create a more agile breed of dog fighter, crossing the bulldog with the Old English Terrier and adding in some Spanish Pointer blood, originally bred Bull Terriers. These breeders soon found out that Bull Terriers were not the most successful fighters, and the breed was set to other tasks such as herding, guarding, and vermin hunting.

The miniature Bull Terrier has a distinct heritage of vermin hunting, and would still be useful in that capability today.