Dogs can eat plums, but only in moderation and with important precautions. The flesh and skin of plums are generally safe for dogs to consume and can provide some vitamins and fiber. However, dogs must never be given plum pits because they contain a toxic compound that can release cyanide and are also a serious choking hazard. Overfeeding plums can cause digestive problems due to high sugar and fiber content, and prunes (dried plums) should be avoided altogether. Always remove the pit and feed plum pieces as occasional treats, not regular diet staples, and monitor the dog for any adverse reactions.