A Scots nurse has become an internet sensation after footage of her boyfriend using their pet dog to propose was posted online.

Sarah Leighton, 25, was lost for words when she unwrapped the pink box tied around labrador Spud’s collar and found a diamond ring inside.

Romantic boyfriend John McCormack, 33, filmed the proposal at the couple’s house in Brisbane, Australia, on Saturday.

A friend then posted it on a website so her family in Scotland could watch it.

The stunned couple, who have been together for three years, woke up the next day to find the video had gone viral.

By last night, it had been watched more than 830,000 times on YouTube.

The clip also sparked a frenzy in the Australian media, who have dubbed it the “most Aussie proposal ever”.

In the video, John can be heard coaxing the couple’s 15-month-old dog upstairs.

He tells him: “OK, Spud, it’s your time to shine – whatever you do, don’t eat the box.”

He then asks Aberdonian Sarah, who is resting in the living room with a broken ankle, to call Spud.

When she discovers the engagement ring tucked inside the box, John asks: “So what do you reckon, do you want to get married?”

Sarah, who moved to Australia four years ago, eventually finds the words to put him out of his misery and replies: “Yes.”

John had hoped to pop the question at a rugby match or during a hot-air balloon flight but had to change his plans when Sarah broke her ankle two weeks ago.

She said: “We had no plans for the day, I was wearing hideous clothes, no make-up and my hair wasn’t done … but I think the proposal was perfect.”

Watch the video here