I really don't know the law on wolf hybrids in Indiana, but
this doesn't seem right to me. This quote is from an article on
Wolf Park's website.

"Unlike most cases involving dogs, wolves and hybrids are almost invariably killed immediately for rabies testing. Although there is substantial circumstantial evidence for the effectiveness of rabies vaccines on wolves and their hybrids, there is no legally accepted vaccine for wolves.'

This statement & others are on listed under Guidelines for
keeping wolf/dog hybrids.

http://www.wolfpark.org/wolfdogs/index.html