When Niall came across a dog shackled to a short chain something reminded him of his personal battle with addiction. He knew he had to rescue her immediately but there was just something about this dog in particular that told him she was destined for more.

He named her Tina, and what she did next is an incredible tale of survival, hope and love. Despite her terrible treatment at the hands of humans, she refused to distrust them or feel sorry for herself, and only opened her heart wider.

From the minute Tina was free of her chains, she got on with what needed to be done, inspiring a dog hospital to be built and named after her and helping dogs from all over the world – whether they're street dogs from Thailand or rescue pups in Montana. The movement behind Tina has not stopped.

On 8th May, Niall's book about Tina launches and to celebrate this, some of the adopted dogs and supporters are walking 80km in May to raise funds for Happy Doggo and Tina's Hospital.