They're just playing most likely.
It depends, if the dog brings joy to the owners life then maybe.
yes
In dog kennels when its owners go on holiday
A dog is expected to at least bark loudly to waken its owners when thieves come, warning that strangers have entered the dog and its owners territory.
sue the owners of the dog
It is possible for the actions of your dog's previous owners to have caused you to feel traumatized.
Well at a dog park, dogs can socialize with other dogs and play. They can get lots of exercise and their owners can meet other dog owners e.t.c.
Talk to the owners of the dog and tell them that the dog is bothering you.
buy your dog a chew toy and play fetch with them
no
Most dogs are trained in some way, even if it's just training them to not urinate on your carpet. So most dog owners train their dog in some form.
boo you