Was unable to camp. What looked to be a pitbull mix, which was not on a leash at the camp hosts trailer, went after our dog while walking to the restroom. Once we picked up our pup the mix backed off. When we went back to our camp the large dog was there and began to growl at us. The large dog left and so did we. During this time a person inside the host trailer only hit on the window and never came outside.