Incredibly, Billie showed no symptoms until a few weeks ago, when a large lump started sticking out of her flank.
"When I noticed the lump on her side a few weeks ago I took her back to our vet
thinking it was a tumour," Thornton said.
She took her dog to the Veterinary Specialist Group in Mount Albert, who took an x-ray.
What we found was quite unbelievable," said Dr. Damian Chase, a surgeon at the veterinary specialist referral hospital.
"The glass did not damage anything vital and has just been sitting in her body. She is one very lucky dog."
Billie is recovering well and keeps giving Thornton her ball to throw, but she's on vet's orders not to run at the moment.