If you have a fearful dog who is nervous, it might be best to leave them at home. Bringing them to an area they are unfamiliar with may intimidate them and lead to them being uncomfortable and unhappy.
Female dogs in heat should be left at home as they could cause male dogs in the area to become energetic at her scent, and cause issues for other dog owners on site.
Puppies should stay at home. A campground may have many dogs that could easily hurt a small defenseless puppy. In addition to danger from other dogs, wildlife could also easily eat or hurt a puppy.
Aggressive / territorial dogs should never be brought camping. They could attack campers or campers pets, who are only there to enjoy their own vacation. A campground can be very busy, and often people reach to pet a dog before asking or considering that it could be aggressive. Bringing an aggressive dog is putting other campers and other pets on the campground at risk.
Sick dogs obviously, should stay home. They will not be feeling well enough to enjoy their time camping, they need rest and relaxation they can only get at home. They could also get other dogs on the campground sick.
Barking dogs will scare off wildlife that campers may want to catch a glimpse of, and annoy your campground neighbor’s to no end. Of course dogs are going to bark every so often, but if your dog is notorious for endless barking, please do your campground neighbors a favor and do not bring them! Never yell or hit your dog for barking, this only makes them nervous or fearful and causes more barking. Instead carry treats, and when they start to bark ask them to sit and distract them with a treat.