Is 7ft-long Boomer the world's biggest dog?

At three feet tall and seven feet long from nose to tail he is making a bid to get into the book of Guinness World Records.

His owner Caryn Weber, of Caselton in North Dakota, has told how her pet has become a bit of celebrity since news of his attempt to make the record books has spread.

She said: “The phone hasn't stopped ringing. It's been a whirlwind.”

Even news organisations as far away as Australia have picked up the story about the 180-pound canine.

But it's not all plane sailing with Boomer as his owner reveals his size can be problematic around the home.

She said: “He comes into the house and his tail is so high everything gets knocked around.”