Millions of adoptable dogs and cats are euthanized in the U.S. each year because many communities have more animals than homes.

PetSmart Charities' Rescue Waggin' is helping to save thousands of these dogs by transporting them to different areas of the country where they're more likely to be adopted.

The cross-country transport program has saved more than 60,000 pets since 2004.

PetSmart recently shared the stories of two dogs whose lives were saved by the program in the short documentary "The Journey Home: A Rescue Waggin' Story."

The film follows homeless dogs, Izzy and Kane, as they're rescued from the streets of Chattanooga, Tenn., and find forever homes after being transported to a shelter in Milwaukee, Wis.

"The day I met Izzy, she immediately jumped into my lap," said Jim Kelly, who adopted the dog. "There's an emotional bond you develop with a dog. We have the perfect chemistry, and to have a dog in your life is a way of life."

As for Kane, his owner, Heather Miller, says she wasn’t planning to adopt a dog, but she fell in love with him after just one look.

"Kane was born hundreds of miles away, but he's now part of our family. To be able to provide a home to a rescue dog is very important and good for our souls," she said.

The Rescue Waggin' vehicle travels up to 3,000 miles a week to transport pets, and Steve Pawlowski, PetSmart Charities’ media relations manager, says Izzy and Kane are just two of the more than 400,000 pets the organizations saves each year.

You can watch "The Journey Home: A Rescue Waggin' Story" below.

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