Butler Animal Health Supply has reported signing a letter of intent to acquire Ivesco. Butler, headquartered in Dublin, Ohio, is the largest U.S. distributor of companion animal products to veterinarians, distributing more than 15,000 products to more than 29,000 veterinarian clinics. Ivesco, formerly the Iowa Veterinary Supplies Co. and headquartered in Iowa Falls, Iowa, sells animal health products for livestock, poultry and other animals across the U.S.