March is National Pet Poison Prevention Awareness Month, a time to raise awareness about common household hazards that can be dangerous to our furry friends. Every year, thousands of pets suffer from accidental poisoning, many of which are preventable. Some common toxins include: Household cleaners and chemicals. Human medications. Cannabis (Marijuana), Marijuana Candy. Toxic foods like chocolate, grapes, and onions. Certain plants like lilies and sago palms.