Fruit Seeds

Seeds and pits from apples, cherries, apricots, peaches, and plums contain cyanide. Chewing fruit seeds releases cyanide and is more dangerous than swallowing them whole. Cyanide poisoning in dogs causes difficulty breathing, convulsions, bright red gums, and can cause rapid death. Swallowing intact fruit seeds typically passes without releasing cyanide; the danger arises when seeds are chewed.