In the quiet communities of Penrhiwceiber and Mountain Ash, South Wales, a senseless act of cruelty has left a family devastated and an entire valley mourning.
Zak, a gentle 12-year-old terrier, was stolen on Saturday, 18 April 2026, while out on a walk along the popular Taff Trail. His owner, Ryan Collins, a vulnerable adult walking Zak on behalf of his mother Janet was approached by three local youths. According to reports, they grabbed Zak’s lead and took him.
What should have been a peaceful morning walk turned into a desperate community-wide search. Missing pet groups, local Facebook pages, and social media appeals spread rapidly as friends, neighbours, and animal lovers rallied to help bring Zak home safely.
Tragically, the search ended in heartbreak the very next day. On Sunday, 19 April, Zak was found deceased on nearby railway tracks after being struck by a train. Many believe the youths abandoned him in a dangerous area with no regard for his safety or the deep bond he shared with his family.
Police Investigation Now Underway
South Wales Police have confirmed they received the initial report of the theft on Saturday and are now actively investigating both the theft and the circumstances surrounding Zak’s death. In their public update, the force acknowledged the devastating impact on the local community and urged anyone with information to come forward directly to officers.
The family and wider community have expressed frustration over the initial response time, with reports that multiple contacts were made throughout the day and evening without immediate attendance. While the investigation is now live, questions remain about whether a faster response could have changed the outcome.
Police have stressed that members of the public should allow officers to carry out their inquiries without interference and pass any information including descriptions of the youths or potential CCTV from the Taff Trail or surrounding areas through official channels (non-emergency number 101 or via the South Wales Police website).
A Beloved Family Member Gone Too Soon
Zak wasn’t just a pet; he was a loyal companion who brought joy and comfort to Ryan and the Collins family. Photos shared widely show the clear affection between Ryan and his dog, highlighting the profound loss they are now facing.
At 12 years old, Zak deserved a peaceful retirement filled with gentle walks and family cuddles not to have his life cut short in such a preventable tragedy.
The case has sparked widespread outrage across social media, with hashtags like #Justice4Zak and #JusticeForZak trending. Many are calling for strong action under animal welfare laws, especially given that the theft targeted a vulnerable adult and led to the death of a senior dog.
A Wider Conversation on Animal Safety and Community Responsibility
Stories like Zak’s remind us how vulnerable our pets can be, even in familiar local areas. The Taff Trail is a much-loved spot for walkers and dog owners, yet incidents like this highlight the need for greater awareness, vigilance, and swift consequences for those who treat animals as disposable.
Animal theft and cruelty are serious issues, and cases involving vulnerable owners add an extra layer of heartbreak. While we await further updates from the police, the community’s message is clear: those responsible must be identified and held accountable.
Message from Dog Desk Animal Action
Dog Desk Animal Action sends our deepest sympathy to Zak’s owner Ryan Collins, his wider family, friends, and all the dedicated lost dog teams and volunteers who worked tirelessly around the clock to locate him.
We hope that those involved in his theft and tragic death will be identified and punished to the fullest extent of the law.
RIP Zak You brought light to many lives and will never be forgotten.
#Justice4Zak #CynonValley


