An overview of potentially life-threatening poisonous plants in dogs and cats
2006
Milewski, Lynn M. | Khan, Safdar A.
This article discusses the toxicity of the most common poisonous plants known to cause life-threatening systemic effects or death in dogs and cats as reported to the ASPCA Animal Poison Control Center (APCC). The article presents an overview of geographic distribution, toxic principle, clinical signs, clinical chemistry alterations, and treatment of intoxication as reported in the literature and based upon data retrieved from the APCC between January 2001 and December 2003. Most plant exposures in dogs or cats result in mild to moderate signs of vomiting and diarrhea while liver, kidney, central nervous system, or cardiovascular effects are rare. Some garden or household plants can cause serious systemic effects or death when a small amount of plant material has been ingested. Based on APCC records, the most frequently reported poisonous plants causing serious systemic effects include Lily (Lilium and Hemerocallis spp.), Azalea (Rhododendron spp.), Oleander (Nerium oleander), Sago palm (Cycas spp.), Castor bean (Ricinus communis), Kalanchoe (Kalanchoe spp.), and Autumn Crocus (Colchicum autumnale). Despite the variety of toxins present in the plants listed above, early clinical signs of toxicosis in dogs and cats can be nonspecific and can include vomiting, lethargy, anorexia, salivation, or diarrhea. Cardiac arrhythmias may be present with oleander, azalea, or kalanchoe ingestion. Evidence of liver or kidney damage (Cycas, Lilium, Hemerocallis spp., Ricinus communis) may occur 1-2 days after the exposure. Treatment consists of early decontamination and supportive care and may vary according to the type of plant involved and clinical signs present.
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