BOSTON -- It's a story with real heart: Daisy, the 3-month-old puppy that underwent successful heart surgery after the generosity of local animal-lovers, is finally homeward bound.

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Amalia Barreda Reports On Daisy RESOURCES Want To Adopt A Pet?

NewsCenter 5's Amalia Barreda reported Thursday that Daisy and her new owners already have a special bond.

They made a perfect portrait. The Mullen family now completed by Daisy, who had surgery at Angell Memorial Medical Center to save her life.

Hundreds of callers responded wanting to adopt the abandoned pup. The MSPCA decided the Mullens, of Cambridge, were the perfect fit.

"We've had several dogs in the past 20 years and have always treated them as part of our family," Barbara Mullen said.

She is a nurse who wrote a convincing letter to the MSPCA.

"I don't know. It just seems like things were meant to be," Frank Mullen said.

He a Cambridge firefighter. Aside from three kids, they already had a dog, named Rosie, that looks a lot like Daisy. But one very rare connection is that oldest daughter, Molly, 14, has also had heart surgery -- three operations, in fact, to correct a congenital defect.

"I feel like now I'm now the only one with a scar," Molly said.

"I think if Molly has to have anything else done then Daisy can kind of help her and she can be reminded of Daisy all the time through it," Molly's sister, Katie, said.

Molly is having yet another operation within a year's time. As for Daisy, she's got the green light for a fully normal life -- requiring only a yearly ultrasound to make sure all is well.