Iowa Code § 166A.11: Sheep entering state.

1. Sheep being moved into the state for breeding or feeding purposes shall be accompanied by a certificate of veterinary inspection stating the sheep are any of the following:

a. From a certified scabies-free area.

b. Treated in an approved manner within ten days prior to movement.

2. Livestock markets, dealers, and individuals shall retain all incoming waybills and certificates for a period of one year which shall be made available to the department upon demand.