Rumble in the Jungle is the nineteenth episode of The Wild Thornberrys's first season which was first broadcast on March 25, 1999.
Eliza convinces a group of baboon-like apes to stand up to their legendary adversaries--"The Others." Darwin, meanwhile, has met an almost identical group of apes with an identical problem.
As Eliza and Darwin lead their separate groups into battle, they suddenly find themselves face-to-face--in an all out war! Now it's up to Eliza to quickly find a way avert the battle and teach the apes to get along.
Meanwhile it's Nigel's and Marianne's wedding anniversary and Nigel has a surprise for Marianne. Marianne hopes this one won't be like the past five.