If you are the chief executive of a bus company and you spend all your time talking about the gospel and not looking after train timetables and your staff you would probably get sacked and it felt to me that as the main message carrier for the party it was a little bit like having your main advertising hoarding permanently damaged, permanently vandalised so your me. (premierchristianity.com)
During WWI, Belgian Sheepdogs distinguished themselves on the battlefields, serving as message carriers, ambulance dogs, and even pulling machine guns. (petguide.com)
They list pigeons as the first long - distance message carriers, in Egypt about 2900 BC. (newscientist.com)