Carnivore
Diet centered on other animals, from insects and krill to large prey, caught with teeth, beaks, talons or tongues.
Ferret
A domesticated weasel relative that spends over 60% of its time asleep in the lab.
Fire Salamander
Black-and-yellow woodland amphibian whose glands behind the eyes secrete toxic alkaloids it can spray at attackers.
Fisher
A fox-sized relative of weasels that climbs trees, hunts porcupines and whose females spend almost all of their adult lives pregnant or nursing.
Frilled Shark
A slow-swimming, six-gilled deep-sea shark whose lineage is estimated at 82 million years old and whose pregnancy may run three and a half years.
Gentoo Penguin
A penguin whose tracked deep dives averaged 80 metres, whose nest can hold over 1,700 pebbles, and which one 2020 study proposes splitting into four species.
Geography Cone Snail
Reef hunter whose venom insulin, released into the water, appears to disorient schools of small fish before the snail engulfs them and harpoons them with a hollow venom tooth.
Gharial
The narrow-snouted river crocodilian with up to 110 razor-sharp teeth, whose males grow a bulbous nasal resonator that buzzes as they exhale.
Ghost Bat
Australia's only carnivorous bat, a night hunter that eats even the bones, teeth and fur of its prey.
Giant Freshwater Stingray
The 300-kilogram Mekong river phantom with a barbed tail spine and the record for the largest freshwater fish ever caught and officially recorded.
Giant Pacific Octopus
Three brains, three hearts, blue copper blood, and skin that changes color and texture.
Giant River Otter
The biggest of all the otters, the Amazon's "river wolf" has jaw leverage that should favor speed and an adult vocabulary of 22 distinct calls.
Giant Squid
The longest cephalopod. The longest one scientifically verified measured 12 m.
Giant Water Bug
A big water bug that stabs fish and tadpoles with its beak, and is drawn to lights.
Glass Frog
See-through belly skin that shows off a beating heart, green bones, and a liver that can hide most of the frog's red blood cells.
Goblin Shark
A deep-sea shark with slingshot jaws and skin that looks pink because blood vessels show through it.
Golden Jackal
The Eurasian canid that split from Africa's look-alike golden wolf more than a million years ago, then spread fast across Europe in the last century.
Goliath Birdeater
The heaviest spider in the world, a 6-ounce rainforest tarantula with fangs that can pierce human skin and stinging hairs it can release.
Gray Wolf
A keystone predator whose packs hunt down elk and moose, and whose howl can carry up to ten miles across Arctic tundra to pull the pack back together.
Great Blue Heron
Waits in shallow water, then strikes with a rapid thrust of the bill
Great Cormorant
A fish-chasing diver with wettable feathers, which has to hang out its wings to dry.
Great Crested Grebe
The diving bird whose courtship runs from paired head-shaking to a breast-to-breast 'Penguin-dance,' and whose chicks ride on their parents' backs.
Great Horned Owl
Feathered horn tufts, tiger of the air, and nocturnal forest ambush conqueror.
Greater Roadrunner
Ground-running desert cuckoo that hits up to 20 miles per hour, smashes prey against rocks, and warms up by sunbathing the black skin on its back.
Green Moray Eel
The reef predator that lies in wait in rock crevices, wearing a thick yellow mucus that turns its dark skin green and protects it from parasites and disease.