A guardian is someone who protects or takes care of someone or something. They have the responsibility to look after someone's well-being, safety, or legal interests. Full definition
Child support is paid to the custodial parent, as legal guardian of the child, or to the state, as an interested party in the child's welfare. (info.legalzoom.com)
This means that the person is the legal guardian of at least one child relevant child. (welfare.ie)
One possible reason for dog attacks is the use of dogs as guardians of the house. (animallawcoalition.com)