India, July 6 -- A heartwarming transformation of a street dog has left Netizens in happy tears, after it was posted by Niall Harbison, who tends to several dogs through his Thailand animal rescue, Happy Doggo. Harbison has a dedicated team that works with these pooches, and their stunning transformations are often posted on their Instagram.

Sienna, a cute brownish pooch, is one of those lucky dogs. Instagram account @wearehappydoggo documented Sienna's journey from her rescue to her new life at her home in Wales.

Sienna first arrived at Happy Doggo last November. In the beginning, she was terrified, cowering in the corner due to her poor health and the trauma she went through.

Sienna had been used for breeding. She had suffered terrib...