Roxy is leash reactive around other dogs. We made good progress on her behavior this summer and fall. However, as the weather gets colder, we don't run into too many people walking their dogs or leaving them outside. She has now reverted back to her excitable, barking lunges. She was a total embarassment at the vet the other day: barked the whole time. Roxy is 20 months olds and has passed AKC Star , beginning and intermediate training, and almost got her CGC (missed leaving the owner). We also had a personal trainer for a few weeks and she mentioned using an e collar for reactiveness to dogs. She currently is on an electric fence which she respects quite well. We haven't used the e collar because we think it may confuse her with the fence collar. Any suggestions?