Captain Planet and the Planeteers - Season 6 - Eps 9: Twelve Angry Animals
The Planeteers are climbing Mount Everest in the Himalayas when they follow a snow leopard and fall into a cavern where they encounter a Yetti among 12 extinct or endangered animals, all of whom can speak, and begin to judge not only the Planeteers, but the entire human race. They go back from the Ice Age and various other time periods where the animals were either hunted or had their habitats destroyed by humans resulting in their extinction or becoming endangered. This episode is used to educate both of the past, present, and future for the viewers it explains how we can have everything one day and lose everything later.
About Captain Planet and the Planeteers

Title: Captain Planet and the Planeteers
First Air Date: 1990-09-15
Last Air Date: 1996-05-11
Status: Ended
Rating: 6.763/10 (from 217 votes)
Language: EN
Seasons: 7
Total Episodes: 113
Network: TBS Syndication
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy, Kids
Production Companies: Turner Program Services, DiC Entertainment, Hanna-Barbera Productions, TBS Productions
Synopsis
Eco-villains beware: Captain Planet is here to save the day! With the guidance of Gaia, five Planeteers - representing Earth, Fire, Water, Wind and Heart - come together to defend our planet from environmental destruction. With their powers combined, the team becomes the solution to pollution!
Cast

Joey Dedio
Wheeler (voice)

LeVar Burton
Kwame (voice)

Kath Soucie
Linka (voice)

Scott Menville
Ma-Ti (voice)

Janice Kawaye
Gi (voice)

David Coburn
Captain Planet (voice)