Under Texas Parks and Wildlife Code, Section 63.102, "No person may possess, transport, receive or release a live wolf in this state." Texas Parks and Wildlife Code, Chapter 62, Subchapter F prohibits a person from killing or attempting to injure a dangerous wild animal, including wolves or wolf hybrids, that are held in captivity or released from captivity for the purpose of being killed. It is also a violation to conduct, promote, assist or advertise a "canned hunt."
Wolf Hybrids are not regulated at the state level; however, some counties and municipalities have local regulations regarding these animals.
Contact the states Fish and Game Department.
I owned one wolf and two hybrids at one time, but I had a certification from the Fish and Game department. The same applies to Deer ownership in my state.
I cannot advise you that it is wise to have a wolf as a companion either. You can take the wolf from the wild, but the wild remains in the wolf.