Neurotoxic Plants that Poison Livestock

In the western United States, poisonous plants most often affect grazing livestock, and the related livestock losses are estimated to cost the grazing livestock industry more than $200 million annually. Many of these toxic plants contain neurotoxins that damage or alter the function of neurologic cells in the central and peripheral nervous systems. The objectives of this article are to present common North American neurotoxic plants, including conditions of poisoning, clinical disease, pathologic changes, and available diagnostics, to identify poisoned animals and the potential prognosis for poisoned animals.