Kittatinny Valley State Park is a pet-friendly recreation area in Andover, New Jersey. Sections of the Paulinskill Natural Trail and the Sussex Branch Trail, constructed atop two former railroads, can be accessed from the park. You might even see a musher and his dogsled team running down the trail. Unfortunately, pets are not permitted to stay overnight in any of the facilities. Kittatinny Valley State Park is open every day of the week from 9am to 4pm.