Plums can be a refreshing delight for many people, however these fruity morsels should not be given to our furry companions. In general, the edible parts of plums (the skin and main fruit) are not considered a high risk toxin, but the problem with plums is related to the stems, leaves, and pit, all which contain various levels of cyanide. When these forms of the plant are excessive chewed or crushed, a toxin called cyanide is released. In addition, higher levels of cyanide are also noted when the greeny parts of the plant are wilted. Cyanide comes from something called cyanogenic glycosides. Cyanide in the body causes a lack of oxygen to the cells, leading to a generalized oxygen depravation, resulting in serious and possible life threatening issues. Clinical signs to note of this toxicity include dilated pupils, difficulty breathing, bright red gums, seizures, collapse, and shock. It is thought that a considerable amount of the plant and pit must be crushed/chewed before problems are seen, however any ingestion should be reported immediately. Another issue commonly seen is related to the size of the pit itself. Ingestion of either a whole or partial pit can lead to irritation of the stomach and intestines, and possible blockage of these areas.