The Wild Thornberrys
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The following is a list of episodes in the first season of The Wild Thornberrys, listed in production order.

Title card # Title Airdate Prod.
Iron Curtain Title 1 "Iron Curtain" October 6, 1998 001
When the Thornberrys need some close-up footage of elephants, they travel to the Ngorongoro Game Preserve. At first Eliza believes it to be a prison, and helps a baby elephant escape to find her mom. She quickly changes her mind about the place when they tackle with some poachers out to trap and kill her pachyderm pals.
Valley Girls 2 "Valley Girls" October 13, 1998 002
The Thornberrys are in Uganda's Impenetrable Forest to film the rare bird the great crested grebe. While Marianne and Nigel go off to film the girls argue over the use of the tape player. In the ensuing argument, Debbie releases the commvee's brake and it takes off downhill. It finally comes to rest on a muddy river bank where it is firmly stuck. The girls will have to work together to free it, with help from some local gorillas.
Title-FloodWarning 3 "Flood Warning" September 1, 1998 003
When Marianne allows Debbie to drive the comvee while she and Nigel are off filming East African lions, Debbie loses the comvee in a muddy river bank and it gets washed away by a flood.
Title-MatadiOrBust 4 "Matadi or Bust" September 15, 1998 004
The Thornberrys are in Africa along the banks of the Congo River. They have three days to catch a freighter at Matadi but if they miss it they will be stuck there for eight weeks. On the barge on the way to Matadi Eliza discovers that Kip and Biederman are also on board and they have a captured hippo with them which they plan to sell to a zoo. While helping the hippo escape Eliza, Darwin and Donnie fall overboard.
The Temple of Eliza Title 5 "The Temple of Eliza" September 17, 1998 005
Eliza comes to be treated as royalty among a pack of jaguars. Meanwhile, Nigel and Marianne attempt a better understanding of Donnie's behavior and ways of communicating.
Vacant Lot Title 6 "Vacant Lot" September 22, 1998 006
A huge forest eating machine is destroying the Amazon forest. Nigel and Marianne set out to find government help in stopping it while Eliza teams up with the animals to fight it. Debbie's attempt to listen to a radio show are being thwarted by a radio that continually breaks down.
Only Child Title 7 "Only Child" October 1, 1998 007
The Thornberrys are camping on the banks of the Amazon river so Nigel can perfect his insect repellent formula. Eliza becomes fascinated with a fresh water dolphin that she sees out in the river. Debbie is bored as usual when a teenage girl from the village wanders into camp. She and Debbie begin hanging together while Eliza worries that she could be a legend come true...a dolphin that takes the form of a young girl.
Title-BadCompany 8 "Bad Company" September 8, 1998 008
A swarm of marmosets overruns the Thornberrys camp, and it's up to Eliza to beat them at their own game. Meanwhile, Nigel and Marianne search for the bird-eating spider, and Debbie searches for ingredients to make shampoo.
Title-DinnerWithDarwin 9 "Dinner With Darwin" September 3, 1998 009
Darwin sets off into the jungle to prove he still has his natural instincts. After a scary night in the jungle, he stumbles upon an empty shack and hides out, but the family who lives in the shack return to find Darwin.
Naimina Enkiyio 10 "Naimina Enkiyio" October 22, 1998 010
Challenging an ancient Maasai legend, Eliza marches into a ""haunted"" forest to prove her bravery. Now, with night falling, Eliza must place her trust in the mysterious legends of the Maasai in order to find her way safely through the dark forest.
Eliza-cology title 11 "Eliza-cology" November 5, 1998 011
The Thornberrys are on the Galapagos Islands to film the return of the sea turtles. While off exploring with Darwin and Donnie, Eliza gives a finch an unfair advantage in getting food and in so doing disrupts the delicate food chain of the island.
Title-GoldFever 12 "Gold Fever" September 10, 1998 012
When Eliza and Debbie discover an old treasure map on the Galapagos Islands, they set out to claim their "riches." Once the gold is discovered, however, greed sets in and the girls begin an all-out battle of trickery to get the gold away from each other.
Flight of the Donnie title 13 "Flight of the Donnie" November 17, 1998 013
The Thornberrys are on the Galapagos Islands to film the return of the sea turtles. While off exploring with Darwin and Donnie, Eliza gives a finch an unfair advantage in getting food and in so doing disrupts the delicate food chain of the island.
Nigel Knows Best title 14 "Nigel Knows Best" March 18, 1999 014
Eliza and her father set off on foot to scale the Andes. Nigel assures Marianne he will be very careful and keep close tabs on Eliza. Marianne is upset because her mother sent a care package. She thinks her mother doesn't think she's a good mother. While scaling the mountain, Eliza can't stand her father's over protectiveness and wanders off on her own... right when a blizzard strikes.
Blood Sisters 15 "Blood Sisters" October 27, 1998 015
The Thornberrys are driving in the Andes Mountains in Peru on the way to visit Dr. Spinoza, the world's foremost authority on vampire bats. This is a special trip for Marianne who was a student of Dr. Spinoza's twenty years ago. On the way, Eliza starts reading about bats and her movie memories about vampires starts spooking her a bit. Dr. Spinoza lives in a remote, big castle and he is not at all like Marianne remembers. Everything about him gets Eliza's imagination going and Debbie sees it as a chance to have some fun at her sister's expense.
The Great Bangaboo title 16 "The Great Bangaboo" March 23, 1999 016
When Eliza discovers that a local performer claims he can talk to animals she believes she's found a soul mate. Eliza must enlist the help of some very "urban" animals to sneak into the sideshow and meet "The Great Bangaboo."
Rumble in the Jungle title 17 "Rumble in the Jungle" March 25, 1999 017
Eliza convinces a group of macaques to stand up to their enemies, Darwin unknowingly helps a different group with the same problem.
Title-TheDragonAndTheProfessor 18 "The Dragon and the Professor" March 30, 1999 018
Eliza will stop at nothing to get a look at the gigantic, fierce Komodo dragon that lives on the Southeast Asian islands. Her plans are halted by the unexpected arrival of her home-schooling teacher who forces her to "hit the books."
Lost & Foundation title 19 "Lost and Foundation" March 16, 1999 019
When the girls discover that their parents have mistakenly taken embarrassing home movies to an awards banquet, they join forces for different reasons in order to save face. Their cross-island trip turns into a race against time in order to beat their parents to the podium.
BornToBeWild 20 "Born to Be Wild" April 1, 1999 020
The Thornberrys are in the jungle of Sumatra where Nigel is in pursuit of his lifelong see a Sumatran rhino in the wild. Eliza and Darwin set out to help him find it while Debbie and Donnie find some surfing teenagers.
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