NC State Veterinary Team Guides Miniature Horse Through Rare Bout of Botulism

Botulism in horses is uncommon in North Carolina, according to Dr. Erin Pearson, one of the veterinarians involved in Mocha’s care. The disease is caused by toxins produced by Clostridium botulinum, which interfere with neuromuscular transmission, leading to progressive weakness and paralysis. Risk factors often include contaminated or moldy hay, particularly round bales, though exposure sources are not always clear.