I've been fortunate to park next to some very well mannered dogs over the years. But, in all honesty, far too many who believe their dogs have been "trained not to bark when we are gone" are wrong and leaving them behind to annoy those remaining in the campground. Please be sure your dog is really capable of being quiet while you are gone, or don't leave them. The world will be a far better place when we all care enough about others to put our own shopping cart away. And that lesson applies to how we care for our dogs. Thanks!