Season 4
Episode Guide
Origin of Donnie Mini-Series-Part 1
S4
E1
While the Thornberrys are in Borneo looking for Orangutan, Donnie gets lost in the Rain Forest he was brought up in. As Eliza searches for Donnie she realizes he may be heading home to look for any of his remaining family.
Origin of Donnie Mini-Series-Part 2
S4
E2
While the Thornberrys are in Borneo looking for Orangutan, Donnie gets lost in the Rain Forest he was brought up in. As Eliza searches for Donnie she realizes he may be heading home to look for any of his remaining family.
Origin of Donnie Mini-Series-Part 3
S4
E3
While the Thornberrys are in Borneo looking for Orangutan, Donnie gets lost in the Rain Forest he was brought up in. As Eliza searches for Donnie she realizes he may be heading home to look for any of his remaining family.
Origin of Donnie Mini-Series-Part 4
S4
E4
While the Thornberrys are in Borneo looking for Orangutan, Donnie gets lost in the Rain Forest he was brought up in. As Eliza searches for Donnie she realizes he may be heading home to look for any of his remaining family.
Tyler Tucker, I Presume
S4
E5
Eliza's adversarial cousin, Tyler, arrives for a four-week visit. The Thornberrys travel down the Congo River in an "African Queen" type boat to film the clawless otter. When Tyler drives the boat without permission, disaster ensues.
Critical Masai
S4
E6
Eliza and Tyler argue over which one of them would make a better warrior. They challenge each other to find the elusive bushback, but when a lightning storms ignites fires in the Savannah, Eliza and Tyler have to work together.
April Fool's Day
S4
E7
On April Fool's Day, Eliza and Marianne keep up their yearly tradition of pulling practical jokes on each other. When Tyler tries to top Eliza by pulling off a better prank, he takes it too far and ends up falling into quicksand.
Birthday Quake
S4
E8
All set to celebrate his thirteenth birthday in the Savannah, Tyler can't wait to accompany Eliza on one of her adventures, but Eliza keeps ditching him so she can help the Elephant Phaedra figure out what's wrong with her cousin, Shango.
Dragon Me Along
S4
E9
When the Thornberrys visit the Great Wall Of China, Eliza is shocked to find that a poacher has captured her panda friend Shi Shou and his mother. With the help of her e-mail pal, Ling, Eliza tries to rescue the pandas.
Horse Sense
S4
E10
At the Nadaam Festival, Marianne coaches Eliza for the annual horse race. When Eliza hears that the wild "przwalski" horses are really fast, she ditches her inexperienced horse, Jamyn in hopes of winning.
All Work and No Play
S4
E11
Eliza and Debbie are supposed to take inventory of supplies, but Eliza is tempted by the call of exploring and leaves to explore a beaver dam.
Queen Of Denial
S4
E12
When Eliza overhears Tyler complain that she always gets her own way, she vows to Darwin that she'll do everything Tyler's way for a whole day.
Happy Campers
S4
E13
The Thornberrys visit the "land of happiness" to film the black-necked crane migration dance, but due to tourist limits, only two of them can enter the city. After it is decided that Marianne and Debbie go, Eliza and Darwin sneak inside the border.
Island Trade
S4
E14
When Debbie drives Eliza and Tyler to the marketplace to trade items, Debbie and Tyler accidentally trade the commvee for a dress that Debbie wants.
Operation Valentine
S4
E15
When Eliza gets a bad stomach, she assumes the Valentine cookies Debbie baked for Sven made her ill. But when she goes rock climbing with Darwin and Donnie, her pain worsens.
Hot Air
S4
E16
Eliza tries to talk Darwin into taking a hot air balloon ride, knowing full well that he's afraid of heights. After being pushed around one too many times, Darwin stands up to Eliza and refuses to go.
New Territory
S4
E17
The Thornberrys run out of gas and meet a family who could be their Aussie doubles. Eliza hits it off with Bethany, but is awkward and overprotective when she realizes she's in a wheelchair.
Hello Dolphin
S4
E18
When Debbie's e-mail boyfriend, Sven, breaks up with her, Eliza tries to cheer her up by getting a reluctant Debbie to swim with dolphins.
Family Tradition
S4
E19
Grandma Sophie invites the Thornberrys to the States for Thanksgiving, but Nigel and Marianne must decline due to their deadline to film the rare Fossa. Debbie is furious and Marianne reluctantly sends the girls.
The Trouble With Darwin
S4
E20
Eliza can't wait to meet her hero, Dr. Jane Goodall, but when Dr. Goodall expresses her disapproval over Eliza keeping Darwin out of the wild, Eliza runs away in despair.
The Anniversary
S4
E21
Grandma Sophie and Grandpa Frank surprise the Thornberrys with a visit to celebrate their fiftieth anniversary, but when Eliza and Grandpa want to climb Mt. Fuji, everyone thinks they are respectively too young and too old.
Look Who's Squawking
S4
E22
Eliza is determined to play vet to some penguins, and misinterprets a penguins request for food, bringing the bird to a base for observation.