Mont. Code Ann. § 81-2-111

The department may apply for and the court may grant a temporary or permanent injunction restraining any person from violating the provisions of parts 1 through 3 of this chapter or rules adopted thereunder, notwithstanding the existence of other remedies at law. When the application of other remedies has been insufficient to compel action to control, extirpate, or prevent the spread of disease or upon a showing that an animal disease emergency exists and that other remedies probably would be insufficient to compel action to control the emergency, the department may apply for and the court may grant mandatory injunctive relief.