A pup in need of pet medication was taken in by the Blue Cross after being hit by a car.
Luckily, however, the poorly pooch was soon reunited with its owner, as Zena, a Bull Terrier, was microchipped.
Zena was found wandering around a London park and needed antibiotics and pain relief for her injuries.
Zoe Kearly, her owner, explained what happened, saying: "Zena had run off which was most unlike her. She was only missing for six hours but it was horrific. I’d rung everyone I could think of to report her missing and had already put up posters. We were beside ourselves.
"We know that if she hadn’t been microchipped we might never have seen her again."
In addition to her pet medication, Zena also had an X-ray and had her wounds dressed.
The Blue Cross is part of the Microchipping Alliance, which campaigns for the introduction of compulsory microchipping.
Other members include The Kennel Club, Dogs Trust, the RSPCA and the British Veterinary Association.