I am a Manchester terrier, and I fulfil the old instructions for such dogs.
"Pussy and Doggy Tales" by Edith Nesbit
The white bull terrier is a near relative of the Manchester.
"The Dogs of Boytown" by Walter A. Dyer
Terrier Group: Manchester Terrier .
The Manchester Terrier is a direct descendent of the early English Black and Tan Terrier, which was highly prized for its working ability as a "ratting" dog in the industrial areas of the North of England.