Facts about Wolf Hybrids. Dog or Danger? | Dog Reflections
No offense OP but please consider your breeding practices as well.
Many people are busy preserving pure bred "captive wolves" as well as NAIDS; wolf dog hybrids are unpredictable and in a more detrimental way affect wolf & NAID lines.
Song Dog Kennels : The Founder Kennels for the American Indian Dog Wolf Hybrids