Dog owners beware: Dangerous blue-green algae possible in Maine waters The toxic algae is to blame for several dog's deaths across the country in the last couple of weeks. You may have seen some of the stories, toxic blue-green algae blamed for killing pets all over the country. The dangerous sludge can be found pretty much anywhere, including Maine. Ira Levine is a professor at the University of Southern Maine's Lewiston campus and the President of the Algae Foundation. He and his students spend hours every year studying the thousands of different types of algae, including blue-green — or cyanobacteria.