And where have you been??
We know what you're thinking, and no. This isn't the story of Sassy, Chance, and Shadow. This actually happened to a pooch named Buster.
After six months Buster's owner, Samantha Squires, had given up hope of ever seeing her doggy best friend, when she received a letter in the post from an animal shelter.
A member of the public had found the intrepid pooch wondering the streets and taken him to the shelter where staff scanned for a microchip.
Late in the afternoon on May 31, a tearful Samantha Squires rang the centre to say that she was his owner.
Buster and Mrs Squires were reunited after he was flown back from San Francisco to Denver.
Much like the family in Homeward Bound Buster's owner will never know what happened to him on his cross country adventure.