Home > Crops & Livestock > Livestock > Animal Health > Sheep & Goats > Poisonous Plants for Louisiana Livestock in the Fall [Image: Senna occidentalis] Images of major poisonous plants are presented to assist livestock owners with plant recognition. Toxic effects are also mentioned. Keeping Show Animals Healthy [Image: girl brushing show pig] This article discusses common diseases in show animals and how to prevent them. Hurricane Aftermath Can Present Potential Livestock Disease Problems Cattle, goats, horses, pigs and sheep surviving Hurricane Katrina and Hurricane Rita are vulnerable to several diseases, including infectious diseases and toxicities, according to a veterinarian with the LSU AgCenter.