Every now and then I end up following a truck that has a loose dog in the back.

Man, this makes me nervous.  So much so that I've actually pulled over to let the truck with the dog in it get a mile or so down the road from me.  I really don't want to see the dog fall out and get run over.

When I had a Mustang I used to put problems behind me.  Now that I have a Corolla, I pull over and let them get way in front of me.

You never see people in the back of trucks anymore, for good reason. I can't imagine putting my "best friend" in the back of a truck anymore.  Nothing good can come of it.  But if you have to, yesterday the Maine State Police Tweeted this:

REMINDER: ME law requires pets riding in the back of a pick-up be properly secured.

The Tweet also included a link to the written Maine law pertaining to dogs in the back of a vehicle.

§2087. Transporting dogs in open vehicle regulated

Transporting dogs in an open vehicle is governed by this section.

1. Definition.  For the purposes of this section, "open vehicle" means a motor vehicle with a portion of the vehicle not enclosed by a top and windows or sides. "Open vehicle" includes, but is not limited to, pickup trucks and convertibles.
2. Restrictions.  A person driving an open vehicle may not transport a dog in the open portion of that vehicle on a public way unless the dog is protected in a manner that prevents the dog from falling or jumping or being thrown from the vehicle.
3. Exceptions.  Notwithstanding subsection 2, this section does not apply to:
A. A dog being transported by a farmer or a farm employee who is engaged in agricultural activities requiring the services of a dog; or,
B. A hunting dog at a hunting site or being transported between hunting sites by a licensed hunter who is in possession of all applicable licenses and permits for the species being pursued during the legal season for that activity.