The sort who own a constant barking dog arent usually the sort you want to have a conversation with about their constant barking dog.
Now you see, this is someone who doesn’t know dogs or people. When me and the wife split and dog got moved into a new house, she (the dog!) was very restless and barked constantly whenever nobody was home with her – her new neighbours left a rude note on the door, demonstrating what ignorant morons (or whinging old biddies 😉 ) non-dog owners can be. The ex went round and apologised, explained the situation. Few days later, dog has settled in, no more (constant) barking.
So it may be that Cougar’s neighbour’s dog will settle soon.