Sezon 18
Bölümler
1 Antarctica: The End of the Earth: Katabatic 24 Eki 1999 2 Antarctica: The End of the Earth: Iceberg 31 Eki 1999 
3 Horses 14 Kas 1999 
4 Sled Dogs: An Alaskan Epic 21 Kas 1999 
5 Wisdom of the Wild 5 Ara 1999 
6 Inside the Animal Mind Part One: Are Animals Intelligent? 4 Oca 2000 7 Humpback Whales 9 Oca 2000 
8 Inside the Animal Mind Part Two: Do Animals Have Emotions? 11 Oca 2000 
9 Inside the Animal Mind Part Three: Animal Consciousness 18 Oca 2000 
10 Cheetahs in a Hot Spot 6 Şub 2000 
11 Showdown at Grizzly River 13 Şub 2000 12 Jackals of the African Crater 27 Şub 2000 
13 Obsession with Orchids 16 Nis 2000 
14 Earth Navigators 23 Nis 2000 
15 The Body Changers 7 May 2000 16 Springs Eternal: Florida's Fountain of Youth 14 May 2000 
17 The Nature of Sex 11 Haz 2000 
18 Animal Attractions: Amazing Tales from the San Diego Zoo 27 Şub 2000
3 Horses 14 Kas 1999 4 Sled Dogs: An Alaskan Epic 21 Kas 1999 5 Wisdom of the Wild 5 Ara 1999 6 Inside the Animal Mind Part One: Are Animals Intelligent? 4 Oca 2000 7 Humpback Whales 9 Oca 2000 8 Inside the Animal Mind Part Two: Do Animals Have Emotions? 11 Oca 2000 9 Inside the Animal Mind Part Three: Animal Consciousness 18 Oca 2000 10 Cheetahs in a Hot Spot 6 Şub 2000 11 Showdown at Grizzly River 13 Şub 2000 12 Jackals of the African Crater 27 Şub 2000 13 Obsession with Orchids 16 Nis 2000 14 Earth Navigators 23 Nis 2000 15 The Body Changers 7 May 2000 16 Springs Eternal: Florida's Fountain of Youth 14 May 2000 17 The Nature of Sex 11 Haz 2000 18 Animal Attractions: Amazing Tales from the San Diego Zoo 27 Şub 2000