“…Pit bull-type dogs posed a special challenge because this colloquial designation is not a breed per se but a descriptor of a heterogeneous group whose membership includes various purebred dogs and presumed mixes of breeds; this descriptor varies according to the definition used in various statutes and ordinances and the opinions of the observer. [32][33][34][35][36][37][38][39][40] The 3 breeds most commonly grouped under the term pit bull in US BSL are American Pit Bull Terrier, American Staffordshire Terrier, and Staffordshire Bull Terrier. Thus, for our strict definition to be concordant, the terms used in differing reports had to be: pit bull, pit bull terrier, American Pit Bull Terrier, American Staffordshire Terrier, or Staffordshire Bull Terrier (without the term mix).…”