
IN addition to what sam said....... you can lose a pet through a heart attack in its sleep, it could break its neck chasing a ball, it could run in front of a car or train or whatever escaping out of your front door.
These things are part and parcel of life im afraid, and have nothing to do with hunting or sport whatsoever.
I choose to run my dogs only in areas where they are highly unlikely to access a road or a railway. They are run on land i have permission on, and the landowners whose land borders it, whilst not giving me permission, are aware and would nto shoot MY dogs for being on their land (although this time of year, i will not, out of courtesy, go anywhere near their land anyway with sheep about).
The dog i work has an excellent recall -- the part timer/retired one is not quite so good but could still be called off someone elses land/away from a railway track.
Running a dog by a busy railway line is very poor judgement in my opinion -- a dog having a heart attack is sheer bad luck.
Nothing, however, to do wtih hunting though!
Em