Self - Narrator / Narrator / Self - Narrative (40 episodes, 2002-2009)
Narrator (5 episodes, 2010-2011)
Field Zoologist / Self - Host (2 episodes, 2007-2010)
Conservationist / Self / Self - Host (2 episodes, 2005-2007)
Self / Self - Great Ape Expert (2 episodes, 2004-2006)
Self (1 episode, 2002)
Self - Narrator (1 episode, 2009)
Bearwalker / Self - Narrator (1 episode, 2010)
Self (1 episode, 2006)
Self - Zoologist (1 episode, 2006)
Self - Filmmaker (1 episode, 2006)
Self - Biologist, Germany (1 episode, 2006)
Self - Wildlife Photographer (1 episode, 2006)
Self - Wildlife Naturalist (1 episode, 2007)
Self - Additional Voice (1 episode, 2007)
Self - Scientist (1 episode, 2007)
Self - Conservator of Gir Forest (1 episode, 2007)
Self - Giant Otter Researcher (1 episode, 2007)
Self (1 episode, 2008)
Self - Wildlife Biologist (1 episode, 2009)
Self - Wildlife Biologist, DICE (1 episode, 2009)
Self - Ecologist (1 episode, 2009)
Self - Wildlife Cameraman (1 episode, 2010)
Self - Field Researcher (1 episode, 2010)
Self (1 episode, 2011)
Self - Biologist (1 episode, 2011)
Self - Forest Ranger, Germany (1 episode, 2006)
Self - Biologist (1 episode, 2006)
Self - Polillo Butaan Project Researcher (1 episode, 2006)
Self - Lion Researcher (1 episode, 2007)
Self - Shark Conservationist (1 episode, 2008)
Self - Dog Trainer (1 episode, 2009)
Self - San Storyteller (1 episode, 2009)
Self (1 episode, 2010)
Self - Graduate Student (1 episode, 2011)
Self - Investigator, Herpetological Soc. of Phil. (1 episode, 2006)
Self - Trapper (1 episode, 2007)
Self - Repitle Curator, Avilon Zoo (1 episode, 2006)
Self (1 episode, 2003)
Self (1 episode, 2004)
Self (1 episode, 2005)
Self - Narrator (1 episode, 2006)
Self - Wolf Rescuer, Russia (1 episode, 2006)
Self - Biologist, Canada (1 episode, 2006)
Self - Wolf Biologist, Yellowstone (1 episode, 2006)
Self - Jungle Detective (1 episode, 2006)
Self - Tracker (1 episode, 2006)
Self - Native Guide (1 episode, 2006)
Self - Gamekeeper / Steward (1 episode, 2006)
Self - Wolf Researcher, Romania (1 episode, 2006)
Self - Primatologist (1 episode, 2006)
Self (1 episode, 2007)
Self - Veterinarian (1 episode, 2007)
Self - Conservationist (1 episode, 2008)
Self - Whale Trust co-founder (1 episode, 2008)
Self - Marine Biologist (1 episode, 2008)
Self - Wildlife Biologist, WCS-Peru (1 episode, 2009)
Self - Narrator (1 episode, 2010)
Self - Naturalist / Wildlife Photographer (1 episode, 2010)
Self - Park Manager (1 episode, 2010)
Self - Tracker (1 episode, 2010)