Missouri Revised Statutes Title XXII. Occupations and Professions § 340.217. Practice of veterinary medicine across state lines defined--license not required, when

(1) The rendering of a written or otherwise documented veterinary medical opinion concerning the diagnosis or treatment of a patient within this state by a veterinarian located outside this state as a result of transmission of individual patient data by electronic, telephonic, or other means from within this state or any other state to such veterinarian or veterinarian's agent; or

(2) The rendering of treatment to a patient within this state by a veterinarian located outside this state as a result of transmission of individual patient data by electronic, telephonic, or other means from within this state or any other state to such veterinarian or veterinarian's agent.

(1) In consultation with a veterinarian licensed to practice veterinary medicine in this state; and

(2) The veterinarian licensed in this state retains the ultimate authority and responsibility for the diagnosis and/or treatment in the care of the patient located within this state; or

(3) Evaluating a patient or rendering an oral, written, or otherwise documented veterinary medical opinion when providing testimony or records for the purpose of any civil or criminal action before any judicial or administrative proceeding in this state or other forum in this state.