article_snippet: Impossible to miss: The Grennan's dog is almost three-times bigger than a normal American pit bull terrier .
article_snippet: Mr Grennan dog is almost three-times bigger than a normal American pit bull terrier.
article_snippet: The Grennan's dog is also still a puppy meaning The Grennan's dog could grow even bigger.
article_snippet: The Grennans believe the bigger the dog, the better.
article_snippet: : The Grennans believe the bigger the dog, the better .