Steve Backshall counts down his ultimate top ten deadly creatures on planet Earth. Series 1 counts down the Fastest, the most Lethal Weapons, the most Killer Tactics, the most Toxic and the Fiercest .
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | September 2011 | September 2011 | 5 |
| Season 2 | September 2012 | September 2012 | 5 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Season 1 | September 2011 | 1 | |
| Season 2 | September 2012 | September 2012 | 5 |
| Unassigned Episodes | 4 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 10 |
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