Seed when castor beans have been ingested by animals. In addition, seeds containing amygdalin—apple, apricot, bitter almond, peach, plum, cherry, quince, and others—when consumed in sufficient amounts, may cause cyanide poisoning. Other seeds that contain poisons include annona, cotton, custard apple, datura, uncooked durian, golden chain, horse-chestnut, larkspur, locoweed, lychee, nectarine, rambutan, rosary pea, sour sop, sugar apple, wisteria, and yew. The seeds of the strychnine tree are also poisonous, containing the poison strychnine. The seeds of many legumes, including the common bean ("Phaseolus vulgaris"), contain proteins called lectins which can cause gastric distress if the beans are eaten without cooking.
Dumas Seed Company warehouse for both human and animal consumption, including Campbell's split-pea soup packets and as a supplemental ingredient for animal feed. Edwin A. Dumas purchased the seed warehouse to store dry peas in the early 1960s. Dumas, a long-time resident of Pullman whose father established the first commercial apple orchard in the state of Washington, began working in the agricultural industry as a field man for the Green Giant Company after high school graduation. In 1942, Dumas began his career in pea processing, working for Klemgard Pea Processing Company in Pullman. In 1959, he purchased a competitor's seed company, Washburn-Wilson Seed Co.