A cat sneaked into a delivery van in Norfolk and went on a trip of more than 50 miles around the county.
The RSPCA is hoping to trace the owner of the ginger cat, who has been named Walter after the explorer Raleigh.
Driver Sean Dick discovered Walter behind his passenger seat on Tuesday afternoon. It is not known where or when he got into the van.
Mr Dick had dropped off parcels at more than 50 places with the NR11 and NR27 postcode, including Cromer and Marsham.
He said: "I was reaching back to pick up a parcel, when I suddenly saw this cat staring at me.
"He was really nice, friendly and healthy, but I have no idea when he got into the van."
Mr Dick said he recalled making a delivery to a property in Roughton, near Cromer, where a number of cats were outside on the porch.
Walter is being cared for by the RSPCA, which said they were having difficulties finding his owner because he not been microchipped.
RSPCA inspector Carrie O'Riordan said: "Walter is a really lovely friendly cat, and someone must be missing him desperately.
"We really hope that we can reunite Walter with his owner and return him safe and sound after his adventure."