Elenco (na ordem dos créditos)
Bob Brisbane
Narrator
Justin Schmidt
Self - Biologist
Vidal Haddad Jr.
Self - Associate Professor at Botucatu Medical School in Sao Paulo State University
Rui Seabra Ferreira Jr.
Self - Director of CEVAP at Sao Paulo State University
Richard Rasmussen
Dean Ripa
Self - Owner of Cape Fear Serpentarium
Bryan Grieg Fry
Self - Biochemist and Moleculair Biologist at University of Queensland
Brien Foerster
Self - Guide and Professional Adventurer
Greivin Carrales
Self - Herpetologist at Clodomiro Picado Research Institute
Paul Rosolie
Self - Naturalist and Explorer
Mahmood Sasa Marin
Self - Professor and Biologist of Clodomiro Picado Research Institute
Gregory Erickson
Self - Crocodilian Biologist
Martin Nicholas
Self - Spider Expert
William Muth
Self - Infectious Diseases Specialist at Samaritan Health Services
Gerardo Aldana
Self - Anthropology and Chicana Studies at UC Santa Barbara
Oscar Miro-Quesada
Self - Psychologist and Healer and Earth Ritualist
Florian Graner
Self - Marine Biologist and Filmmaker
Jesús Olivares
Self - Neuroscience PhD at University of Valparaiso
George Burgess
Self - Director of Florida Program for Shark Research
Greta Binford
Self - Associate Professor of Biology at Lewis & Clarke College
Maritza Sepúlveda
Self - Marine Ecologist of University of Valparaiso
Ian Recchio
Self - Herpotologist
Robert Espinoza
Self - Reptile Expert at California State University
Mark Sabaj Pérez
Self - Interim Curator of Fishes at Academy of Natural Sciences at Drexel University
Vanessa Van Der Linden
Self - Pediatric Neurologist
Salvador Hernandez
Self - Project Manager of Olive View-UCLA Medical Centre
Gerald S. Wilkinson
Self - Department of Biology at University of Maryland
Piotr Naskrecki
Self - Entomologist of Museum of Comparative Zoology at Harvard University
Emiliano Donoadio
Self - Zoologist and Ecologist
David Zeledon
Self - Killer Bee Victim
Jonathon Becker
Self - American Crocodile Victim
Audrey Benton
Self - Fer-De-Lance Victim
Rebecca Cliffe
Constancia Ayres
Self - Lead Mosquito Researcher of Oswald Cruz Foundation
Christiane Weirauch
Self - Professor of Entomology at University of California
Giuseppe Puerto
Self - Biologist and Director at Biological Museum Instituto Butantan
Stephen Rankin
Self - Executive Producer of 'Naked and Afraid'
Dawn Brancheau
Self - Killer Whale Victim
Demian Chapman
Self - Associate Professor of Marine Sciences at Florida International University
Scott Cassell
Self - CEO of Undersea Voyager Project
Jackson Landers
Self - Black Widow Spider Victim
Marcelo Bahia Labruna
Self - Vetenarian Professor of University of Sao Paulo
Nancy Black
Self - Marine Biologist of Monterey Bay Whale Watch
Jim Hatfield
Self - Iguana Researcher, Lecturer and Author
Maira Gutierrez
Self - Assassin Bug Patient
Cristian Bonacic
Self - Professor, Wildlife Conservation
Lindsay Renner
Self - Lead Keeper of Primates of Utah's Hogle Zoo
Patrick McNulty
Self - Lifeguard at Tamarindo Beach
Fabián Bonilla-Murillo
Self - Biologist of Clodomiro Picado Research Institute
Joseph Gillespie
Self - Assistant Professor of Microbiology and Immunology of University of Maryland
Liliana Pérez Frost
Self - Recluse Spider Victim
William Crampton
Self - Associate Professor of Vertebrate Biology at University of Central Florida
Danilo Chacon
Self - Venemous Snake Expert of Clodomiro Picado Research Institute
Richard Cross
Self - Behavioural Ecologist and Retired Professor of Psychology
Stephen Scourfield
Self - Travel Editor, The West Australian and Seven West Media
Judy Avey-Arroyo
Self - Founder and Owner of The Sloth Sanctuary
Beth Astles
Self - Keeper at Hunter Valley Zoo
Lauren Evill
Self - Zoo Keeper of Perth Zoo
Amalin Haddad
Self - Puma Witness
Sarah Thompson
Self - Mother of Audrey, Fer-de-Lance Victim
Lorenzo Sympson
Self - Ornithologist
Francisco Arroyo Murillo
Self - Vetenarian of the Sloth Sanctuary
Nicole Duplaix
Self - Chair, Otter Specialist Group at Oregon State University
Kenneth Catania
Self - Professor of Biological Sciences at Vanderbilt University
Elizabeth Congdon
Self - Assistant Professor of Bethune-Cookman University
Mario Palma
Self - Professor in Biochemistry at Sao Paulo State University
Denise Maria Candido
Self - Biologist at Insituto Butantan
Juan Campos
Self - Assistant Professor at University of Florida
Mariella Superina
Self - Research Scientist of CONICET
Mario de Pinna
Self - Curator of Museum of Zoology at University of Sao Paulo
Roberto Moraes
Self - Scientific Researcher, Instituto Butantan
Olivia Katherine Baker
Self - Victim's Wife
Kari Bagnall
Director of Jungle Friends Primate Sanctuary
Mônica Lopes-Ferreira
Self - Biologist and Toxologist of Instituto Butantan
Euan Allen
Self - Schistosomiasis Expert at Oregon State University
Warren Savary
Self - Field Associate of California Academy of Sciences
Edgar Alvin Harrell
Self - USS Indianapolis Survivor
Rafael Antelo
Self - Scientific Director of Palmarito Foundation
David H. Oi
Self - Research Entomologist of US Department of Agriculture ARS
Adriana Consorte-McCrea
Self - Chair, Wildlife and People Initiative at Canterbury Christ Church University
Poldi Furlan Mouat
Self - Park Manager, Santiago, Chile
Mario Urriola
Self - Biologist of Fauna Conservation
Fabio Hazin
Self - Professor at Federal Rural University of Pernambuco
Leslie Ann Knapp
Self - Professor and Chair of Anthropology of University of Utah
Stuart Hine
Self - Entomologist
Rozilene Fereira de Mequita
Self - Mother of Arthur with Zika Victim
Kenneth Iserson
Self - Professor Emeritus, Emergency Medicine, University of Arizona
Ricardo Bravo
Self - Professor at University of Valparaiso
Adam Brandt
Self - Assistant Professor of Biology at St. Norbert College
Andy Tillman
Self - Llama Expert and Founder of US Llama Industry
Rafael Samuido Fernándoz
Self - Ecologist and Mammalogist of Panama
Bradley James Baker
Self - Bot Fly Victim
Maira Guttierrez
Deise Nishumura
Self - Biologist and Black Caiman Victim
Drew Cordell
Re-enactment Cast
Sebastian Arredondo
Mariana Coentro de Souza
Marijod Trigo
Hebert Calapuja
Viviane Coentro
David Nicholson
Bianca Liberona
Jorge Morero Daza