Photograph by Faith San Felice
Greg Marshall is a scientist, inventor, and filmmaker who has dedicated the last 25 years to studying, exploring, and documenting life in the oceans.
In 1986, while diving in the reefs off Belize, Greg encountered a shark and was struck by the sight of a remora fish clinging to the shark's side. Imagining the unique perspective the remora must have when hitchhiking with its host, Greg conceived a remote camera that would mimic the remora's behavior.
If the camera were small and lightweight, it could attach like a remora to a host and record the behavior of sea creatures in situations where a handheld camera could never venture. Recognizing the scientific potential of such a tool, Greg decided to make it a reality.
Greg began developing a revolutionary animal-borne research tool to record images, sound, and data from an animal's perspective. Today that tool is called Crittercam, and it has been used in groundbreaking studies on dozens of marine species.
Deployed on whales, sharks, seals, turtles, penguins, and other species, Crittercam has enabled Greg and his research collaborators to capture information that, until now, was inaccessible to humans. In 2003 Greg and his team deployed the first land-based Crittercam on wild lions in Kenya, capturing remarkable new images and insights—and ushering in a new era of behavioral science.
Funded by National Geographic Television, philanthropic foundations, and U.S. federal grants, Greg has created not only a scientific tool, but also a major collaborative research program engaging scientists worldwide. Over ten years, Greg's Remote Imaging Program has collaborated with over 30 scientific groups on over 50 different species.
In addition to providing critical scientific data for basic biology and habitat management, Crittercam's unique perspective captures the imagination of television audiences. Shared through National Geographic films, the stories these images convey fuel public awareness of the extraordinary lives and challenges many marine species face. With heightened awareness comes caring, and with caring, conservation.
Greg is a two-time Emmy Award winner for cinematography and sound, for the National Geographic Specials "Great White Sharks" (1995) and "Sea Monsters: Search for the Giant Squid" (1999). Since then, Greg has created and been executive producer of a 13-part series and 6 hour-long NG films on Crittercam.
Greg earned a bachelor's degree in international relations from Georgetown University and a master's degree in marine science from the State University of New York at Stony Brook. He is currently discovering extraordinary creatures named Connor and Logan—his sons.
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Animals A-Z
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Aardvark
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Adélie Penguin
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African Elephant
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African Lion
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African Wild Dog
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Albatross
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Alligator Snapping Turtle
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Amazon Horned Frog
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American Alligator
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American Bison
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American Bullfrog
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American Crocodile
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Ammonite
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Andean Condor
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Anglerfish
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Ankylosaurus Magniventris
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Ant
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Arabian (Dromedary) Camel
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Arctic Fox
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Arctic Hare
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Arctic Skua
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Armadillo
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Asian Elephant
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Asian Lion
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Atlantic Bluefin Tuna
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Atlantic Puffin
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Aye-Aye
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Baboon
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Bactrian Camel
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Bald Eagle
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Baltimore Oriole
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Beaver
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Beluga Whale
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Bengal Tiger
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Bird of Paradise
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Black Bear
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Black-Footed Ferret
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Black Mamba
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Black Rhinoceros
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Blacktip Shark
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Black Widow Spider
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Bluebird
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Blue Crab
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Blue-Footed Booby
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Blue Jay
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Blue Marlin
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Blue Whale
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Boa Constrictor
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Bobcat
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Bottlenose Dolphin
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Box Jellyfish
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Brachychampsa Montana
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Brown Bear
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Bull Shark
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Burmese Python
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Butterflyfish
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California Condor
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California Sea Lion
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Canada Goose
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Cane Toad
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Canvasback
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Caribou
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Carolina Wren
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Cheetah
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Chimpanzee
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Chipmunk
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Cicada
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Clouded Leopard
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Clown Anemonefish
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Coelacanth
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Common Earthworm
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Common Loon
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Common Octopus
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Common Sandpiper
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Common Vampire Bat
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Common Wombat
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Coral
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Cottontail Rabbit
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Coyote
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Cretoxyrhina Mantelli
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Cuban Screech Owl
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Cubera Snapper
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Deer Tick
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Devil Frog
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Dingo
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Dog Snapper
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Dolichorhynchops Osborni
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Domestic Cat
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Domestic Dog
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Draco Lizard
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Dugong
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Eastern Coral Snake
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Eastern Diamondback Rattlesnake
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Eastern Gray Kangaroo
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Egyptian Giant Solpugid (Camel Spider)
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Electric Eel
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Elephant Seal
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Elk
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Emperor Penguin
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Fennec Fox
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Firefly (Lightning Bug)
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Flying Fish
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Flying Snake
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Fossa
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Frilled Lizard
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Fur Seal
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Galápagos Tortoise
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Gelada
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Gentoo Penguin
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Geographic Cone Snail
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Giant Anteater
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Giant Clam
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Giant Pacific Octopus
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Giant Panda
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Giant River Otter
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Giant Squid
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Gibbon
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Gila Monster
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Giraffe
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Golden Cowrie
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Golden Eagle
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Golden Jellyfish
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Golden Lion Tamarin
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Golden Poison Dart Frog
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Gray Whale
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Great Blue Heron
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Great Egret
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Greater Flamingo
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Greater Rhea
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Great Horned Owl
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Great White Shark
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Green Anaconda
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Green Basilisk Lizard
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Green-Eyed Tree Frog
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Green Iguana
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Green Sea Turtle
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Grizzly Bear
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Groundhog
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Hammerhead Shark
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Harbor Porpoise
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Harp Seal
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Hawaiian Monk Seal
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Hawksbill Sea Turtle
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Hedgehog
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Henodus Chelyops
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Hesperornis Regalis
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Hippopotamus
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Honeybee
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Horned Toad (Short-Horned Lizard)
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Hornet
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Horse
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Howler Monkey
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Humpback Whale
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Impala
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Indian Rhinoceros
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Ivory-Billed Woodpecker
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Jackrabbit
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Jaguar
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Kemp's Ridley Sea Turtle
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Killer Whale (Orca)
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King Cobra
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King Vulture
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Kinkajou
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Koala
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Komodo Dragon
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Krill
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Ladybug
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Laughing Kookaburra
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Leafy and Weedy Sea Dragon
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Leatherback Sea Turtle
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Leopard
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Leopard Seal
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Leptoceratops Gracilis
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Lesothosaurus Diagnosticus
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Lionfish
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Little Red Flying-Fox
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Llama
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Lobster
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Locust
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Loggerhead Sea Turtle
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Lynx
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Macaw
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Madagascar Hissing Cockroach
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Mallard Duck
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Manatee
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Mandrill
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Marine Iguana
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Matschie's Tree Kangaroo
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Meerkat
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Meller's Chameleon
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Mexican Axolotl
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Mola (Sunfish)
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Mole Rat
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Monarch Butterfly
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Mongoose
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Mononykus Olecranus
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Moose
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Mosquito
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Mountain Goat
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Mountain Gorilla
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Mountain Lion
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Mouse Lemur
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Mudpuppy
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Musk-Ox
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Narwhal
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Nile Crocodile
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North American River Otter
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Northern Leopard Frog
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Nudibranch
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Nurse Shark
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Nutria
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Ocelot
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Olive Ridley Sea Turtle
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Opossum
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Orangutan
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Oriental Fire-Bellied Toad
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Osprey
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Ostrich
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Oyster
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Ozark Big-Eared Bat
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Pachycephalosaurus Wyomingensis
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Parrot
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Parrot Fish
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Peacock
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Pelican
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Peregrine Falcon
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Pileated Woodpecker
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Platecarpus
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Platypus
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Poison Dart Frog
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Polar Bear
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Porcupine
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Portuguese Man-of-War
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Prairie Dog
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Praying Mantis
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Proboscis Monkey
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Pronghorn
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Protosphyraena
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Protostega Gigas
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Przewalski's Horse
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Pufferfish
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Queen Angelfish
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Quetzal
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Raccoon
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Rainbow Trout
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Raven
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Red Crab
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Red-Eyed Tree Frog
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Red-Footed Booby
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Red Fox
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Red Kangaroo
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Red Leaf Monkey
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Red Panda
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Red-Tailed Hawk
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Red Uakari
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Rhesus Monkey
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Right Whale
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Ringed Seal
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Ring-Necked Pheasant
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Ring-Tailed Lemur
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Rockhopper Penguin
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Rocky Mountain Bighorn Sheep
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Ruby-Throated Hummingbird
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Sailfish
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Saltwater Crocodile
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Sandhill Crane
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Sand Tiger Shark
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Scarab
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Scorpion
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Sea Anemone
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Sea Cucumber
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Seahorse
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Sea Otter
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Siberian Tiger
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Sifaka
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Skunk
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Sloth Bear
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Snow Goose
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Snow Leopard
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Snowshoe Hare
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Snowy Owl
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Sockeye Salmon
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Spectacled Bear
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Sperm Whale
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Spider Monkey
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Spotted Hyena
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Spotted Salamander
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Spring Peeper
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Squirrel
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Starfish (Sea Star)
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Steller Sea Lion
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Steller's Sea Eagle
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Stick Insect
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Stingray
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Styxosaurus Snowii
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Sumatran Rhinoceros
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Sun Bear
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Tapir
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Tarantula
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Tasmanian Devil
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Thescelosaurus Neglectus
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Thick-Billed Murre
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Thomson's Gazelle
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Three-Toed Sloth
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Tiger Salamander
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Tiger Shark
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Toucan
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Triceratops Horridus
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Triggerfish
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Troodon Formosus
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Tundra Swan
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Tusotheuthis Longa
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Two-Toed Sloth
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Tylosaurus Proriger
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Tyrannosaurus Rex
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Velociraptor Mongoliensis
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Wallaby
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Wallace's Flying Frog
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Walrus
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Warthog
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Warty Newt
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Wasp
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Water Buffalo
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Web-Footed Gecko
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Weddell Seal
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Western Lowland Gorilla
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Whale Shark
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White-Eared Kob
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White Rhinoceros
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White-Tailed Deer
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Whooping Crane
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Wildebeest
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Wild Turkey
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Wolf
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Wolverine
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Wood Stork
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Xiphactinus Audax
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Zebra
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