My 9 month old puppy used to travel on the back seat (with a harness and seat belt attachment) but she's getting big and also had a tendency to climb on the kids with muddy paws when they're in the back too, so we now put her in the boot (hatchback with parcel shelf removed so she can see out the back and look over the seats). She cries and barks and it's so stressful for me as the driver. She barked and cried when on the back seat too but calmed down a lot quicker.
She is generally quite an anxious dog - barks when anyone comes to the door/ hates being left alone/ over excited at just about everything, but the car thing is getting me down quite a lot as I can't imagine driving any distance at all with all this barking. Any tips to calm her down?