The dog attack occurred in Wales earlier this week.

A heartbroken mother has paid tribute to her 10-year-old son who was killed by a dog in Wales. 10-year-old Jack Lis was killed by a Pitbull-style dog on November 8th. The incident occurred in Caerphilly, South Wales. It is believed the young boy walked to his friend's house after school before the tragedy occurred. Neighbours heard Jack's friend screaming for help before emergency services arrived at the scene. https://www.facebook.com/walesupdates/photos/a.596117967188223/2481124552020879/   Mother Emma Whitfield said on Facebook, as reported by Sky News: "With so much heartbreak and before close friends and family see his name in the news, I have to announce our beautiful boy Jack was taken so tragically yesterday. "It was not our dog nor did it happen at our family home. He was out to play. We need the speculation to stop. The police will issue this formally later." The mum stressed that she and her family won't be speaking to the media. They have asked the public to respect their privacy during this devastating time. "We love you so much our sweet sweet boy," she added. Jack's headteacher Gareth Rees also paid tribute to the 10-year-old.  "The whole school community has been rocked by the tragic events of the past 24 hours," he said. "Jack was a bright and caring pupil who was popular amongst his peers and the teaching staff at Cwm Ifor." "Our thoughts are very much with his family at this difficult time and we now need time and space to heal together as a school community. Appropriate support is being made available for pupils and staff over the coming days as we come to terms with this devastating news.”