These funny before-and-after photos show three little dogs that are tiny puppies in the first picture – but one of them later grows to be far bigger than the others, weighing in at a whopping 78 kilos.

The dogs are part-owned by 20-year-old psychology student Claudia Carter of Yorkshire, England, who manages the TikTok page ‘Bruhpuppy’ and who also appears dwarfed by her doggy pal.

Her page boasts 59,200 followers and shows the exploits of doggie ‘siblings’ Arlo, Bertie and Ernie.

Claudia told Newsflash in an exclusive interview that she and her family have had Arlo, who is 11 months old and “from an Irish Wolfhound breeder”, for nine months.

She revealed that Arlo, who is seen in later pictures towering over his ‘siblings’, “currently weighs 78.2 kilogrammes and is approximately 37 inches tall”.

She told Newsflash: “We bought him from a reputable Irish Wolfhound breeder. We knew Arlo was going to be big, as his biological father and grandfather are very big.”

Claudia said: “Arlo lives inside the house with his brothers, two Miniature Schnauzers, called Bertie and Ernie.

“Arlo eats approximately two kilogrammes of food a day and we feed him a raw diet.”

A raw diet typically includes organ and muscle meats, whole or ground bone, raw eggs, fruit and veg, and dairy products like yoghurt.

Advocates say such a diet can yield glossier coats, healthier skin, better dental health, more energy and smaller stools.

Irish Wolfhounds have famously been described as “gentle when stroked, fierce when provoked”, and this holds at least partly true for Arlo, who, according to Claudia, is “very much a gentle giant, he has never shown aggression”.

Claudia said that Arlo’s huge size provokes different reactions, telling Newsflash: “Many people come over to meet and pet him. Others take photographs to show to their friends and family. However, sometimes people cross the road, as his size can be seen as intimidating.”

On what makes Arlo happy, Claudia said: “He loves playing with his toys, playing with his brothers Bertie and Ernie. He also loves going for adventures and long walks.”