Jacob and Bonnie Richter were enjoying a holiday in Florida with Holly when fireworks caused her to scurry away. They tried in vain to locate her before heading back home.
However, Holly managed to find her way back home after two months, reports Sky News.
Barb Mazzola found Holly a mere mile from the Richters and said: "She was so skinny, all bones and weak, and she could hardly walk."
Jacob told CNN: "Yeah, she had a journey. We'd love to know the story behind all her trip.
"We've got to fatten her up [and] spoil her again."