An amazing case of pet navigation:
"In 1923, while on a family road trip in Indiana, Bobbie—a two-year old Scotch Collie/English Shepherd mix—was separated from his owners and lost. After an exhaustive search the broken-hearted family returned to their home in Oregon never expecting to see their beloved dog again. Six months later, Bobbie appeared on their doorstep mangy and scrawny with feet worn to the bone; he showed all the signs of having walked the entire way back alone.
During his ordeal he crossed 2,551 miles (4,105 km) of plain, desert and mountains in the winter to return home, an average of approximately 14 miles (23 km) per day. After his return to Silverton, he experienced a meteoric rise to fame. He was the subject of newspaper articles including Ripley's Believe It or Not!, books and film. Bobbie played himself in the 1924 silent film The Call of the West. He received hundreds of letters from people around the world and was honored with a jewel-studded harness and collar, ribbons and keys to cities."===http://en.wikipedia.org/wiki/Bobbie_the_Wonder_Dog
"In 1923, while on a family road trip in Indiana, Bobbie—a two-year old Scotch Collie/English Shepherd mix—was separated from his owners and lost. After an exhaustive search the broken-hearted family returned to their home in Oregon never expecting to see their beloved dog again. Six months later, Bobbie appeared on their doorstep mangy and scrawny with feet worn to the bone; he showed all the signs of having walked the entire way back alone.
During his ordeal he crossed 2,551 miles (4,105 km) of plain, desert and mountains in the winter to return home, an average of approximately 14 miles (23 km) per day. After his return to Silverton, he experienced a meteoric rise to fame. He was the subject of newspaper articles including Ripley's Believe It or Not!, books and film. Bobbie played himself in the 1924 silent film The Call of the West. He received hundreds of letters from people around the world and was honored with a jewel-studded harness and collar, ribbons and keys to cities."===http://en.wikipedia.org/wiki/Bobbie_the_Wonder_Dog