Montana Title 45. Crimes § 45-8-227. Harassment or harm of service animal

(a) continues behavior that interferes with the use of a service animal by obstructing, intimidating, or otherwise jeopardizing the safety of the service animal or the service animal's handler after the person has received notice on the behavior;

(b) negligently causes the harm, disability, or death of a service animal;  or

(c) is the owner of a dog or other animal and negligently allows the dog or other animal to interfere with the use of a service animal by obstructing, intimidating, or otherwise jeopardizing the safety of or causing harm to a service animal or the service animal's handler.