Narrator (12 episodes, 2018)
Self - Biochemist and Moleculair Biologist at University of Queensland (9 episodes, 2018)
Self - Herpetologist and Conservationist (9 episodes, 2018)
Folklorist / Self - Psychologist (8 episodes, 2018)
Self - Naturalist and Explorer (8 episodes, 2018)
Self - Toxinologist at James Cook University (8 episodes, 2018)
Self - Big Cat Tracker (6 episodes, 2018)
Self - Field Associate at California Academy of Sciences (6 episodes, 2018)
Self - Crocodilian Biologist at Florida State University (5 episodes, 2018)
Self - Marine Biologist at James Cook University (5 episodes, 2018)
Self - Adjunct Professor of Hindu Studies at Claremont School of Theology (5 episodes, 2018)
Self - Wildlife Biologist and Founder Bornean Sun Bear Conservation Centre (5 episodes, 2018)
Self - Wildlife Consultant (5 episodes, 2018)
Self - Filmmaker and Naturalist (4 episodes, 2018)
Self - Professor and Chair of Anthropology at University of Utah (4 episodes, 2018)
Self - Biologist (3 episodes, 2018)
Self - Underwater Cameraman (3 episodes, 2018)
Self - Mosquito and Vector Control Expert (3 episodes, 2018)
Self - Founder and President of The Orangutan Project / Self - President of International Elephant Project (3 episodes, 2018)
Self - Executive Director of Zoo Montana (3 episodes, 2018)
Self - Travel Editor of The West Australian (3 episodes, 2018)
Self - Infectius Diseases Specialist at Tan Tock Seng Hospital (3 episodes, 2018)
Self - Animal Ecologist of Ashoka Trust for Research in Ecology and the Environment (3 episodes, 2018)
Self - Wildlife Conservationist and Photographer (3 episodes, 2018)
Self - Co-Founder of Tiger Research and Conservation Trust (3 episodes, 2018)
Self - Venomous Snake Handler (3 episodes, 2018)
Self - Wildlife Biologist (3 episodes, 2018)
Self - Co-Founder of Wildlife SOS (2 episodes, 2018)
Self - Spider Expert (2 episodes, 2018)
Self - Box Jellyfish Victim / Self - Son of Box Jellyfish Victim (2 episodes, 2018)
Self - Bee and Wasp Expert (2 episodes, 2018)
Self - Wildlife Biologist Nature Conservation Foundation / Self - Wildlife Biologist of Nature Conservation Foundation (2 episodes, 2018)
Self - Komodo Dragon Victim (2 episodes, 2018)
Self - Professor of Department of Medicine at University of Peradeniya (2 episodes, 2018)
Self - Dengue Fever Victim (2 episodes, 2018)
Self - Ichthyologist at California Academy of Sciences (2 episodes, 2018)
Self - Tiger Victim (2 episodes, 2018)
Self - Yak Breeder (2 episodes, 2018)
Self - Giant Moray Eel Victim / Self - Professional Diver (2 episodes, 2018)
Self - Box Jellyfish Victim's Partner (2 episodes, 2018)
Self - Sloth Bear Victim (2 episodes, 2018)
Self - Box Jellyfish Victim's Father / Self - Father of Box Jellyfish Victim (2 episodes, 2018)
Self - Medical Entomologist at Environmental Health Institute in Singapore (2 episodes, 2018)
Self - Executive Director Wildlife Asia (2 episodes, 2018)
Self - Ichthyologist at National University of Singapore (2 episodes, 2018)
Self - Zoo Guide at National Zoo and Aquarium Canberra (2 episodes, 2018)
Self - Fishing Expert and Adventurer (2 episodes, 2018)
Self - Co-Founder of Tiger Research and Conservation Trust (2 episodes, 2018)
Self - Entomologist (1 episode, 2018)
Self - Professional Langur Imitator (1 episode, 2018)
Self - Orthopaedic Surgeon (1 episode, 2018)
Self - Asian Forest Scorpion Victim (1 episode, 2018)
Self - Animal Shopowner at Arizona (1 episode, 2018)
Self - Nature Guide and Naturalist (1 episode, 2018)
Self - Needlefish Victim (1 episode, 2018)
Self - Director of Institute for Asian Black Bear Research and Preservation (1 episode, 2018)
Self - Curator of Crustacians at Lee Kong Chian National History Museum (1 episode, 2018)
Self - Billfish Victim (1 episode, 2018)
Self - Associated Professor of Institute of Biological Sciences at University of Malaysia (1 episode, 2018)
Self - Stonefish Victim (1 episode, 2018)
Self - Honey Badger Victim (1 episode, 2018)
Self - Street Dog Victim (1 episode, 2018)
Self - Photographer (1 episode, 2018)
Self - Black Bear Victim (1 episode, 2018)
Self - Zookeeper at National Zoo & Aquarium Canberra (1 episode, 2018)
Self - Son of Malaysia's Snake King (1 episode, 2018)
Self - Founder of Spider Lover Petshop (1 episode, 2018)
Self - Wild Boar Attack Victim (1 episode, 2018)
Self - Saltwater Crocodile Attack Victim (1 episode, 2018)
Self - Macaque Bite Victim (1 episode, 2018)
Self - Waterbuffalo Victim (1 episode, 2018)
Self - Wildlife Expert (1 episode, 2018)
Self - Asian Needle Ant Victim (1 episode, 2018)
Self - Box Jellyfish Victim's Mother (1 episode, 2018)
Self - Veterinarian (1 episode, 2018)
Self - Ecologist (1 episode, 2018)
Self - Shark Bite Victim (1 episode, 2018)
Self - Rove Beetle Victim (1 episode, 2018)
Self - Leptospirosis (1 episode, 2018)
Self - Director of Kentucky Reptile Zoo (1 episode, 2018)
Self - Bullshark Attack Victim (1 episode, 2018)
Self - Operations Manager at the National Zoo and Aquarium (1 episode, 2018)
Self - Snake Catcher (1 episode, 2018)
Self - Assistant Curator at Madras Crocodile Bank Trust (1 episode, 2018)
Self - Medical Epidimiologist (1 episode, 2018)
Self - Executive Director of The Wolverine Foundation (1 episode, 2018)
Self - Founder of Elephant Nature Park (1 episode, 2018)
Self - Director Sumatran Orangutan Conservatian Programme (1 episode, 2018)
Self - Wildlife Biologist (1 episode, 2018)
Self - Snake Shyam of Mysore (1 episode, 2018)
Self - Asiatic Lion Victim (1 episode, 2018)
Self - Department of Terrastrial Zoology at Western Australian Museum (1 episode, 2018)
Self - Wildlife Ecologist and Slow Loris Victim (1 episode, 2018)
Self - Common Krait Victim (1 episode, 2018)
Self - Diver and Marine Veterinarian (1 episode, 2018)
Reenactment - Sean (unknown episodes)
Reenactment - Shannon (unknown episodes)