An adorable dog is coming on leaps and bounds after recovering from a successful sex change operation. 

Molly was born intersex which meant that she had both male and female genitalia. 

The dog's gender reassignment is only the second time in 10 years that such a procedure has taken place in Scotland

Vets said that despite appearing to be completely female to those that met her, she was in a significant amount of discomfort because of her external genitalia. 

Molly's pain meant that she underwent a gender reassignment operation at the Pets'n'Vets Family's Roundhouse Hospital in the Pollokshaws area of Glasgow

As Molly underwent surgery, it was found that the dog had male internal sexual organs as she had testicles in place of ovaries within her abdomen. 

Her owners Mary, 56, and Frank Finlay, 63, from Glasgow, said despite the surgery, Molly is the same little dog they adopted 18 months ago. 

He said: "We noticed something wasn't quite right when Molly kept lifting her leg to pee, which girl dogs don't do. 

"I asked the vet and they decided to investigate and they noticed that she had a small appendice and had testicles, as well as an ovary. 

"The surgery took place and she has been fine ever since." 

With the known sex of the puppy changing, Frank said they almost considered renaming it. 

Frank added: "There was talk about changing the name from Molly to Olly, but we decided that she was always going to be Molly to us." 

Veterinary surgeon Ross Allan said that if Molly was left untreated then she risked developing a long-term debilitating condition. 

He said: "Molly was what is defined medically as a male pseudo-hermaphrodite or more commonly 'intersex'. 

"Her particular anatomy meant that whilst Molly appeared to be a female, closer examination revealed elements of both male and female external genitalia and unfortunately this was leading to significant genital discomfort. 

"If left untreated, this risked her developing a long-term and debilitating condition. 

"We decided that the very best solution for Molly was to proceed with definitive surgery to create an anatomical situation which would avoid ongoing issues or discomfort. 

"The surgery was a great success and Molly is much more comfortable and happier as a result. 

"Intersexism is rare, and some cases will not require any treatment at all. 

"In Molly's case it was a painful condition which was causing problems and surgery was an important step to ensure she is able to go on to live a pain-free life." 

Molly is 18 months old and underwent the surgery last June and is now well following recovery and a number of follow-up checks.