Idaho

"No person shall operate or maintain a commercial wildlife facility without obtaining the proper facility licenses from the Department of Fish and Game. A "commercial wildlife facility" is any facility where the operator obtains, possesses, or propagates wildlife for any commercial purpose, including exhibition, education, entertainment, or sale. "Wildlife" means any form of animal life, native or exotic, generally living in a state of nature provided that domestic cervidae as defined in section 25-3701, Idaho Code, shall not be classified as wildlife. In addition, no person shall maintain a wildlife facility without first obtaining certification from the relevant city or county zoning and planning commissions that such establishment is in compliance with all existing county ordinances. In addition, all such persons must obtain certification from the U.S. Department of Agriculture that they are in compliance with federal laws. Specific caging and treatment requirements exist for exhibited captive wild animals.

Wolves are protected but there is no mention of hybrids or of keeping 100% wolves as pets. The state's biggest concern seems to be whether you're shooting the animal - not if you have one as pets.

Owner of the animal needs to register the animal with local authorities, and depending on the town/county may require a license or permit. Federal Exhibitor permit may apply.

Law Link 1
Law Link 2
Law Link 3

Disclaimer: Please check all local - city, county, township ordinances in your area first before getting any hybrid or exotic animal.