The Bull Terrier (Miniature) is exactly what the name suggests, a
Bull Terrier in
miniature. This breed
of dog was developed using
selective breeding from the larger breed.
In the early 1900s, the
difference between the breeds was determined by the dog's weight. However, this
led to Miniature Bull Terriers becoming so small and fine that they looked more
like a
Chihuahua than a Bull Terrier. So, in the
1970s, the weight limit was
replaced with a height limit of under fourteen inches.