Posted: Yesterday at 21:32
Righto...First of all you need to keep your dog secure, so make a temporary fence up with stakes and chicken wire - wont cost a fortune, and will keep fido in.
If you have rhododendrons that means you have acid soil, so if you have a search of plants that like your kind of soil, you could have a chat with your neighbour over a coffee.....or a beer and decide what would look nice.
If you grow a good selection of shrubs with - maybe a climber or two mixed in you could make your hedge interesting - and the new plants will grow and cover up the chicken wire.
You are wise to keep it friendly with your neighbours, and I hope it all works out for you.