Related: Illegal XL bullies may be put down if owners are non-compliant, police say
A nine-month-old baby boy died following a dog attack at an address in Rogiet, South Wales, on Sunday evening.
Gwent Police have now confirmed the dog involved in the incident was a six-year-old XL bully.
The animal was registered with the Department for Environment, Food & Rural Affairs (Defra) and held a certificate of exemption issued in 2024.
Assistant Chief Constable Vicki Townsend said the dog was registered proactively before the ban, and owners were not required to formally identify the breed for exemption.
No arrests have been made, and the police investigation is ongoing, with authorities urging the public to avoid speculation.