A: Your question has multiple factors that cannot be adequately answered without a full consultation.
However, general speaking, a parent may bring a custody dispute in ND if the child lives in ND. To protect your parental rights, you may want to file for a judicial order that gives you custody and prevents the father from taking the children out of state.
***This is general legal information, and I cannot provide adequate legal advice without first discussing at length the particular facts and circumstances of your matter.***
A: A K9 sniff is sufficient probable cause subject to certain limitations. Relevant circumstances include whether the K9 was initially present on scene, the original reason for the traffic stop, the length of the traffic stop, etc. In certain situations, relevant circumstances may deem the K9 stiff unconstitutional, thus not admissible as evidence.
This is general legal information, and I am unable to give adequate legal advice without first speaking with you at length of the circumstances surrounding your particular situation.