This is the emotional moment a young boy was reunited with his lost pet and burst into tears of joy.

Paula Williams‎, who lives in Lubbock, Texas, posted the heartwarming footage to the city's Lost and Found Pets Facebook page, where it has been viewed more than 3.4 million times.

Writing alongside the video, Paula explained that her son's puppy Kase went missing from their house about a month ago.

Good news: Paula recorded the moment she called her son to the car to reunite him with pet dog Kase

She said that the dog was eventually found down the street from where they live - a family had taken him in and kept him warm and fed.

Paula decided to record the moment she shared the good news with her son and captured his sheer delight at being reunited with the puppy.

In the video Paula tells her son that she has a surprise for him.

The youngster wanders towards the car while struggling to put his coat on as his mum instructs him to take a look inside.

The youngster wanders towards the car before realising who is sitting inside and looking absolutely stunned

He stares at the dog and looks stunned while uttering his name, as if trying to convince himself that he is indeed looking at his pet.

The young boy then grabs hold of the dog and pulls him in for a hug before bursting into tears of joy.

He continues to repeat his name - entirely shocked by who it is he has been reunited with.

He then says: 'Oh Kase, I missed you,' as the dog licks him in the face to confirm that the feeling is indeed mutual.

'Kase?' The boy utters the dog's name as if trying to convince himself that he has been reunited with his pet

Since appearing online the video has received a number of comments from viewers who have been understandably touched by the footage.

'I'm bawling what a sweet video. I am so happy you found your dog! Thank god he was being kept safe by your neighbours! The bond between Kase and your son must be amazing,' wrote one.

Another said: 'Oh my gosh! I'm crying with him. I'm so happy you found Kase. I know your son must have felt so awful without his buddy.'