From the Montana CFSD site:

The Child and Family Services Division (CFSD) is a part of the Montana Department of Public Health and Human Services. Its mission is to keep Montana's children safe and families strong.

The division provides state and federally mandated protective services to children who are abused, neglected, or abandoned. This includes receiving and investigating reports of child abuse and neglect, working to prevent domestic violence, helping families to stay together or reunite, and finding placements in foster or adoptive homes.

To report a possible case
of child abuse or neglect,
call toll-free 1-866-820-5437.