The crew travelled from Newbury, eight miles away from the Middleton’s estate in West Berkshire, and attended along with an animal rescue unit.
A call was made to the Royal Berkshire Fire and Rescue Service headquarters in Reading, claiming that a pet was trapped with its head in a gate at the Duchess’ family home.
A spokesman for the Royal Berkshire fire service confirmed the incident and said: ‘We were called to an animal rescue. The special unit from Reading was dispatched along with an appliance from the nearest station, Newbury’.
He added: ‘Our crew got to the manor but were told as they arrived at the gates that the dog, which had got its head stuck, had been freed just a few moments earlier so their services were not needed.
The animal rescue unit was stood down before it reached Bucklebury and the appliance returned home.’
It is likely that Lupo has been taken to the Middletons’ £2 million home so that he can be looked after by the family during the birth.
Greg Blatchford, a photographer close to the scene, revealed that he had heard someone shouting a name which sounded like ‘Lupo’ and soon after a ‘high-pitched scream which sounded like a dog in distress’.
Kate’s beloved pet is no stranger to the limelight, photographed last year in Prince William’s arms as he held and kissed him affectionately.
The royal couple are expecting their first child.