Algae That Can Kill Dogs Is Discovered in 3 N.Y.C. Parks. Water Pollution, Lakes, ALGAE, Parks and Other Recreation Areas, Bacteria, Rain, Hazardous and Toxic Substances, Global Warming, Dogs, Environmental Conservation Department (NYS), Parks and Recreation Department (NYC), Central Park (Manhattan, NY), LAKE HOPATCONG (NJ), Prospect Park (Brooklyn, NY)