How Quickly Does Toxic Algae Affect Dogs?

How Quickly Does Toxic Algae Affect Dogs? Symptoms, which usually arise anywhere from 15 minutes to several days after exposure may include: Diarrhea or vomiting. Drooling. How long does it take for a dog to get sick from blue-green algae? Symptoms, which usually arise anywhere from 15 minutes to several days after exposure may include: