A Great Dane which weighs the same size as a baby elephant could be crowned Britain's heaviest dog - after tipping the scales at an astonishing 15st.
The seven-foot pooch, named Balthazar, has to sleep in specially made beds.
He chomps his way through £108-worth of dog food every month and rules the roost in his owners' house.
The five-year-old pet measures 3ft 3in from his paw to his shoulder and is 7ft from his nose to his tail.
He lives with owners Vinnie, 46, and Dixie Monte-Irvine, 39, and their three children in Gedling, Nottingham.
While not Britain's tallest dog - that crown goes to an 8ft Great Dane in Swansea - experts believe he is the country's heaviest.
'Everyone at the surgery was gobsmacked'
Vinnie was shocked when he took Balthazar to the vets last week and the scales clocked a whopping 15st 6lb.
He said: "He is a big dog but isn't a fat dog though as you can still see his ribs.
"We were told from when he was a lot smaller that he was always quite heavy for his age.
"We took him to the vets as he has a poorly leg and he needed to be weighed to see how much medication he can take.
"Everyone at the surgery was gobsmacked and we were all just Googling to see if he was actually the world's heaviest living dog."
The family's other dog, 15-year-old Patterdale Terrier Fifi, has become a surrogate mum to Balthazar.
The five-year-old pooch measures 3ft 3in from his paw to his shoulder
Vinnie says Balthazar is a gentle giant who likes to play with their children and is best friends with their three cats.
He added: "They see themselves as a pack and will usually all come out on a walk together.
"We have three cats, Magic, Buffy and Leo. Buffy and Leo sleeping on either side of him when they go to bed.
"We have to buy him special dog beds online and he regularly eats them.
"He lives in the kitchen which thankfully is a big kitchen but it can make a cooking a challenge at times."
The Guinness World Records does not monitor the record for the heaviest dog due to animal welfare reasons.
Last summer a three-year-old Great Dane called Major was crowned the world's tallest dog .
The giant dog, who lives with owners Brian and Julie Williams in Penmaen near Swansea, South Wales,measures 8ft.
But he only weighs 12st - which is three stone less than heavyweight pooch Balthazar.