8.24 avg 14 episodes 7.8 → 8.3
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Danger: Wild Animals | 7.8 | 6 |
| 2 | The Miracle of Flight | 8.2 | 9 |
| 4 | Prairie Dog Village | 7.8 | 8 |
| 5 | The Amazon Jungle | 8.3 | 7 |
| 7 | Puma Pass | 8.6 | 8 |
| 8 | Fact of Fallacy | 8.0 | 7 |
| 9 | Monkey Shines | 7.8 | 6 |
| 10 | Queen of the Everglades | 8.4 | 5 |
| 11 | Island Outposts | 8.5 | 7 |
| 14 | King of Beasts | 8.7 | 6 |
| 15 | Survival in the Sun | 8.2 | 5 |
| 16 | Crater of Gold | 8.4 | 5 |
| 17 | Poles Apart | 8.4 | 5 |
| 18 | Vanishing with the Wilderness | 8.3 | 6 |
8.35 avg 6 episodes 8.2 → 8.6 30 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Land of the Quaking Earth | 8.2 | 6 |
| 2 | Trailing the Midnight Sun | 8.6 | 5 |
| 3 | Cattail Country | 8.8 | 5 |
| 4 | The Philmont Trail | 8.8 | 6 |
| 5 | Spotted Ghost, Part I | 7.1 | 7 |
| 7 | Valley of the Eagles | 8.6 | 7 |
8.18 avg 9 episodes 8.7 → 7.1 30 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | South Through the Sonora | 8.7 | 6 |
| 2 | Bayou Backwaters | 8.7 | 6 |
| 3 | Tale of the Fox | 8.7 | 6 |
| 4 | Bobcat Kingdom | 8.4 | 5 |
| 8 | In Search of a Whale | 7.8 | 5 |
| 9 | Killers of the Rupununi | 8.0 | 6 |
| 12 | Land of Shadows | 7.8 | 5 |
| 15 | Adelie of Antarctica | 8.4 | 7 |
| 61 | Lair of the Tiger | 7.1 | 7 |
