It's either the world's most loyal dog or one that really follows the command, "Stay." In Hannibal, Missouri, a 9-month-old Yorkie wasn't about to leave a Missouri rest stop without his master.

 Mistakenly left behind by an Arkansas truck driver, Rambo the dog waited there for two days until his owner was able to track him down. Rambo jumped out of Michael Siau's big rig when Siau stopped at a rest area near Hannibal. He said, "Didn't even cross my mind that he might jump out. He never has before." When Siau left the rest stop he assumed his dog was in the back asleep. He had travelled 170 miles before realizing Rambo was gone. In October, Rambo's father, Ollie, who also accompanied Siau on trips, was run over and killed. Siau was so distraught he took six months off work, and the thought of losing another dog was too much to bear. As he retraced his steps he concluded the puppy must have gotten out in Missouri. After talking with authorities, Hannibal animal control officer Tim Ledbetter was sent to the site. Sure enough, little Rambo was there, sitting patiently. But just barely. Ledbetter said a family that had stopped at the rest area was just about to adopt the apparently lost puppy and "In about 60 seconds, he would have been gone."