I have my pups out at 4 month following the van down the Lane ,,for a mile or two with the other dogs,,,infact last year when I had mushrooms pup here for two months,,from 8 week old,,,after it had its jabs it was following the van,,,only cos the c**t of a dog was going mental in van to get out,,,it would stand on the seat with its paws on the dash watching the others,,,after a few jurnys like this,,it was jumping about all over me,,,so in the end I thought feck it out you go,,lol