Owners should call the Clinic at 905-987-3816 if they have a pet requiring Emergency Medical attention. They will be treated at Newcastle Veterinary Clinic during regular Business Hours. If owners call the clinic after we are closed, they will be directed to call the Animal Emergency Clinic of Durham Region(AEC) at 905-576-303. The AEC is located in Whitby at the Back of the Building at 1910 Dundas Street East b101.