A cat who was found “frozen and unresponsive” after it was buried by snow has made a complete recovery.

Fluffy was found with snow and ice frozen to her fur in the Montanan city of Kalispell last week, when temperatures dropped as low as -13C.

Fearing the worst her owners rushed her to the Animal Clinic of Kalispell nearby.

The cat was so cold her body temperature didn’t even register on the facility’s thermometers.

But after a few hours of vets using warm blankets and a hairdryer to wake her up, Fluffy began to show signs of recovery.

The clinic, posted pictures of the cat’s recovery on its Facebook page, which have since gone viral.

The first shows her lying on a tiled floor covered in snow, while another shows a vet using a hairdryer on her fur.

The final image shows Fluffy looking like she is back to her usual self.

The clinic posted alongside the images: “Amazing success and survival story from this week. Some clients found their injured cat buried in snow. They brought her to us essentially frozen and unresponsive.

“Her temperature was very low but after many hours she recovered and is now completely normal. Fluffy is amazing.”

The US has experienced record low temperatures in recent weeks with some places hitting -49C. They were blamed for at least 21 deaths.

Niagara Falls was also completely frozen over last week after temperatures in Ontario, Canada, dropped to –18C.

The sudden extreme temperatures are the result of a polar vortex – a weather phenomenon that occurs in the winter and impacts parts of the northern hemisphere.