1 This document is Fact Sheet VM-96, one of a series from the Veterinary Medicine-Large Animal Clinical Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First published: January 1, 1999. Reviewed: August 2002. Please visit the EDIS Web Site at http://edis.ifas.ufl.edu. 2 Ruth Francis-Floyd, DVM, Extension Veterinaria...