Yesterday, the Otago Daily Times reported Demon, who hid under covers on a bed in the burning garage, suffered third-degree burns to his back, face and left leg.
The fire is thought to have started when Sultin, a 10-month-old American blue-nose pit bull-cross, chewed through a phone-charger cable. Sultin died in the fire.
Demon was taken to Pets and Vets Queenstown, where he is likely to remain for "months".
Yesterday, veterinary nurse Clare Temperton said Demon had been put under general anaesthetic to have burnt skin removed from his body to prevent infection.
Treatments like that would be required "every few days" and the cost of it was expensive - a bill which was out of reach for Demon's owner, Russell Davies.
After Demon's story ran in the ODT yesterday, Ms Temperton said many people had either called the clinic or popped in to offer financial support or products which would be raffled off to raise money for his treatment. Mr Davies was also fundraising in Cromwell, she said.
"People are really getting behind it. Today we must have raised about $200."
While "every bit counts", the cost of Demon's treatment was likely to be at least $10,000, particularly if he required skin grafts.
Pets and Vets was running a raffle comprising goods which had been offered to the clinic and was also considering other fund-raising ideas.
It was possible the clinic would organise a quiz night in the next few weeks, where the raffle would be drawn and people "could come along and check on Demon's progress".
