Rangeland, pastures and hay fields throughout Oregon often contain poisonous plants that are potentially dangerous to cattle and other livestock.
Some plants absorb excess nitrates or oxalates from the soil and store them in plant tissues. Toxicity problems can occur in animals which feed on these plants.
Poison oak plants contain a chemical that causes a severe rash. Learn how to spot a plant, safely remove, and clean your clothes, gear and skin afterward to prevent a rash.