Home » Australia’s Biggest Dog Doesn’t Realize How Big He Is, Constantly Crushes His Owner With 250 Lbs Of Love » Page 4 Australia’s Biggest Dog Doesn’t Realize How Big He Is, Constantly Crushes His Owner With 250 Lbs Of Love September 13, 2016 Posted in LATEST STORIES Share: XFacebookLinkedin The funny part id that he will become even bigger than what he is now. He is still 2 years old and the English mastiff grows in size up to 4 years old. Via: BoredPanda Pages: 1 2 3 4