
My daughter's terrier is 7 months old and came to us from a rescue at 5 months old. When he first came to us - having been in their kennels for a month - he drove us crazy with his barking. He barked at everything, even the grass growing would set him off

:D
His barking at home is now under control. We ignored the barking and praised and treated him for being quiet and he is soooooooo much better now and will even ignore other dogs barking if he hears them when out in the garden. If he barks we use the word quiet and he stops straight away.
BUT in the car he is a nightmare. He is quiet for the first 5 or so minutes and then barks continually all the way to wherever I am going to walk the dogs. He ignores the word quiet in the car, so I have stopped using it there, (but he still responds to it at home). He literally barks the whole time and there is very rarely even the tiniest nano-second when he stops so never have the opportunity to praise for being quiet - it just doesn't happen

After his walk he doesn't make a sound all the way home. He has one walk on his own each day so is in the car by himself and the other walk is with Harley who never barks in the car and very rarely barks at all. As well as being annoying it is also very distracting when you are driving. When we get to our destination I don't open the tailgate until he has stopped barking which can take up to 6 or 7 minutes but seems hours when I am standing there red with embarrassment as other walkers walk off with their wonderfully quiet dogs :D He usually travels in the cargo area of the car and I have tried him on a seat belt harness in the back seat but then he spent his whole time jumping up the back seat trying to get through the dog guard to be with Harley and still barked non-stop.
I have tried taking him out in the car but not walking him so he doesn't always associate travelling in the car with going for a walk but he still barks.
Does anyone have any ideas on how to stop this behaviour please? For such a small dog he has a very loud bark and it's driving me mad

:)