At Closter Animal Hospital we know how scary it can be when something happens to your pet overnight and you're not sure what to do. That's why we have a doctor on call 24 hours a day, seven days a week. If you have an emergency, please call us, and one of our doctors will respond right away. We are always here for you when you need us. When your pet needs to stay overnight, there is a technician who will be monitoring them and addressing all of their needs during the night.