American Staffordshire Terrier vs Staffordshire Bull Terrier — Side by Side

	American Staffordshire Terrier	Staffordshire Bull Terrier
Lifespan	10-15 years	12-14 years
Size	Medium	Medium
Weight	40-70 lb	24-38 lb
Energy	High	High
Grooming	Low	Low
Shedding	Moderate	Low
With kids	With supervision	Good with kids

What actually separates them

Less hair on the sofa with the Staffordshire Bull Terrier. More with the American Staffordshire Terrier.
American Staffordshire Terrier tends to live longer — 10-15 years against 12-14 years.
With young children, Staffordshire Bull Terrier is the safer default — American Staffordshire Terrier is listed as "With supervision".

The honest downside of each

American Staffordshire Terrier

This breed carries some of the most restrictive breed-specific legislation of any dog worldwide — outright bans or ownership conditions exist in multiple countries and in various US cities and counties — and many landlords and home-insurance policies exclude the breed by name regardless of an individual dog's temperament or training.

Staffordshire Bull Terrier

Despite the breed's own gentle, people-focused temperament and its old nickname 'the nanny dog,' its bull-and-terrier ancestry and blocky build mean it can be caught up in the same insurance exclusions, breed-specific ordinances, and pet-unfriendly rental listings that target pit-bull-type dogs in parts of the US, regardless of an individual dog's behavior.

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American Staffordshire Terrier · Staffordshire Bull Terrier
Health problems, origin and what living with each is actually like.