Birds
Fish and other Swimmers
Insects, Arachnids, and Arthropods
Mammals
Reptiles
100
The rock dove is found in almost every city in the world, known more commonly by this name.
What is the pigeon?
100
Despite its scary looks, the chance of being attacked by one of these fish is much smaller than of being struck by lightning.
What is a shark?
100
Almost all adult arachnids have this many legs.
How many is eight legs?
/GettyImages-610300188-5823debd5f9b58d5b1a24ebf.jpg)
100
These mammals are known to be the most dangerous in existence, dominating almost all other living organisms with their intelligence and stamina, among other qualities, and destroying entire ecosystems.
What are humans?
100
These reptiles are distinct because of their lack of visible arms or legs (though vestigial arm and leg bones can be found in their skeletons).
What are snakes?
200
This is the largest living type of bird.
What is an ostrich?
200
These large ocean fish are commonly enjoyed in the forms of salads, sushi, and steaks.
What are tuna?
200
These insects resembling bees are actually wasps that love to invade picnics but are very peaceful, and will not attack humans unless provoked.
What are yellowjackets?
200
These mammals, which were preserved through mummification alongside the Pharaohs, were among the first to be domesticated by humans.
Wha are cats?
200
The upper and lower portion of this reptile's shell are called the carapace and plastron, respectively.
What is a turtle or tortoise?
300
Modern birds are descendants of theropods, which were a two-legged variety of this extinct group of animals.
What are dinosaurs?
300
These highly intelligent cephalopods have been known to solve complex puzzles, navigate mazes, and plan and execute daring escapes from aquaria where they are kept.
What are octopuses?
300
A species of flightless midge is the only insect species—and the largest purely terrestrial species—native to this continent.
What is Antarctica?
300
This category of mammal is characterized by giving birth to young that are not fully developed, and then carrying them in a pouch until they mature.
What are marsupials?
300
These two types of reptiles can be distinguished by the shape of their snouts, whether their teeth show then their jaws are closed, and whether they live in fresh or saltwater.
What are alligators and crocodiles?
400
This goofy-looking bird had no predators in its own environment, so it would fearlessly approach humans, who had hunted it easily to extinction before the year 1700.
What is the dodo?
400
The South American knifefish is capable of generating up to 860 volts and 1 ampere of electric current and is better known by this name.
What is an electric eel?
400
The males of these insects, which bore holes and make homes inside wood and wooden structures, do not have stingers, so in order to ward off threats they do an intimidating mid-flight dance. (They are usually docile and friendly to humans, and you can even pet them!)
What are carpenter bees?
400
This mammal is unlike almost any other because of its beak-like mouth and habit of laying eggs
What is a platypus?
400
The common name for this reptile is derived from its apparent ability to "walk on water" (it actually runs across without breaking the surface tension).
What is the Jesus Lizard?
500
This national bird of Ohio is named after members of the Catholic church who dress in red, and also has a non-Ohioan baseball team named after it.
What is the cardinal?
500
This deep-water fish is named for its appearance after its body has decompressed near or above the surface. (In its natural environment 1200 meters down the water pressure is 120 times greater!)
What is the blobfish?
500
In his beloved children's book The Very Hungry Caterpillar, Eric Carle mistakenly referred to this as a "cocoon".
What is a chrysalis?
Cocoons are specific to moths and have a silk casing, while butterfly larvae form chrysalises, which have a hard casing.
500
The Saudi Gazelle went extinct in what century?
What is the 21st century?
500
This large Indonesian monitor lizard has a somewhat deceptive word in its common name: that of a mythological creature.
What is a Komodo dragon?
