If a non-resident hunts mountain lions with a resident who has dogs, does the non-resident have to have a hound hunter permit?

Sorry for the delay in responding. Yes, a non-resident hunting mountain lions (with a resident who has dogs) must have a valid hound hunter permit and mountain lion tag for the current year.  More information can be found on page 89 of the 2013 Big Game Seasons and Rules book:  http://fishandgame.idaho.gov/public/docs/rules/bgLaws.pdf