Hi, we are new to this forum. We have had our dog for about 10 years. A few years ago, we got another dog. They have been living together for a few years now and have no behavioural problems.
About 6 months ago, our older dog began barking all day while we are at work. She throws herself at the fence where the neighbours dogs are, and barks pretty much non stop when we are not home. The strange thing is though, when we are home she is super well behaved and she plays fine with the neighbours dogs when they are all out the front together.
It is only when she is left in our yard she has a complete personality flip and starts barking and attacking fences.
We have tried bark collars, she simply puts up with the shocks and continues barking, we have tried leaving her in different sections of the yard, we have tried all sorts of things and nothing changes the behaviour.
Its very odd and worrying and we are running out of options. Nothing has changed for years stimulus wise regarding her environment or anything else we are aware of, and opinions would be most helpful.