Driving back from bracknell a few months back on the M3, a large ausatian complete with chain lead was running towards traffic on the outside lane.
Obviously i thought my eyes were decieving me..........but no, there it was, slobbery tongue and all.
I managed to avoid it, must have been doing about 80-odd at the time, saw two other cars in my rear view quickly manuever too.
Wonder what happened to young Fido.