Buster was a dog belonging to Roy Hattersley, a British politician and former Deputy Leader of the Labour Party.
On 6 April, Hattersley was stopped and questioned by the police while returning home after walking Buster in the park.
Buster was suspected of killing the goose, while not under Hattersley's control, and a quick check revealed blood around his muzzle.
The Royal connection, coupled with Hattersley's prominent public position, led to national media coverage of the incident.
Hattersley wrote a piece in The Guardian, sympathising with The Princess Royal after one of her dogs had allegedly attacked a woman in Windsor, and Jeremy Paxman mentioned the incident in a piece in The Times which he wrote in response to comments Hattersley had made about the BBC.