Montana

I have not been able to find anything on feline hybrids.
Canine hybrids less than 50% are legal (except for Billings, which banned wolfdogs).

Montana Administrative Rules: http://arm.sos.state.mt.us/12/12-351.htm

12.6.1901 Wolf hybrids are generally considered domestic, however the Administrative rules define a coyote as any canine hybrid which is one-half or more coyote, and a wolf as any canine hybrid which is one-half or more wolf.

As of Jan 2004, Montana began the process of regulating the import, sale, and possession of exotic animals. The new legislation 87-5-705 refers to a list of controlled species (87-5-707) but this list has not yet appeared in the codes. It says that a committee will be formed to compile this list.

http://data.opi.state.mt.us/bills/mca/87/5/87-5-705.htm
http://data.opi.state.mt.us/bills/mca/87/5/87-5-707.htm