Assertion: terrier's dog | /r/CreatedBy | terrier
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Source sentences:
text: The pit bull dog is considered one of the most aggressive dogs in the USA, created by breeding bulldogs and terriers together to produce a dog that combined the gameness and agility of the terrier with the strength of the bulldog, having many types as the American Pit Bull Terrier, American Staffordshire Terrier, American Bully, and Staffordshire Bull Terrier.