Jock Mahoney makes his second appearance as the loinclothed one in Tarzan's Three Challenges. Tarzan is in Thailand this time, rescuing a young prince (Ricky Der) from his wicked uncle. Highlights include a fast-paced machete fight; lowlights include the scenes with a cute baby elephant named Hungry. Woody Strode, the African-American ex-athlete who would have made a pretty good Tarzan himself, is the Jungle Lord's principal adversary. The biggest challenge in Tarzan's Three Challenges was hiding the fact that Jock Mahoney was seriously ill all during shooting; if one doesn't notice that Mahoney's weight fluctuates from shot to shot, then director Robert Day did his job well.