This shark's distinct head-shape gives it great depth perception
What is a hammerhead?
Snakes are found in every continent except Antarctica, and on many islands, but not on this largest island in the world
What is Greenland?
While the best known species of these pollen-consuming insects live socially in colonies, most species are solitary
What are bees?
Recent studies have suggested that horseshoe crabs possibly belong within this class, which includes spiders, ticks, scorpions, and many others
What are arachnids/Arachnida?
All elephant species are either endangered or critically endangered, in large part due to poaching for this material
What is ivory?
These marine arthropods were extant for nearly 270 million years before going extinct in the Permian-Triassic mass extinction event
What are trilobites?
Only one species of these birds, which form the family Spheniscidae, is found in the northern hemisphere
What are penguins?
Jellyfish lack this biological system; they don't need it since enough oxygen diffuses through their epidermis
What is a respiratory system?
The arctic fox was originally placed in its own genus, Alopex, before genetic evidence revealed that it was a member of this genus of true foxes
What is Vulpes?
The black toad, due to its small range, has been given this conservation status, with a severity between that of Near Threatened and Endangered
What is Vulnerable?
Out of all octopus species, these ones, named for the characteristic pattern on their skin, are some of the most venomous marine animals in the world
What are blue-ringed octopuses?
Despite its name suggesting a range limited to a single river, this large reptile is found in most of Africa outside of the Sahara, including parts of Madagascar
What is the saltwater crocodile?
Some species of ants and aphids have this sort of relationship that benefits both species, often conflated with symbiosis
What is mutualism?
Cladistically, fish include tetrapods, which are traditionally excluded; when taken together, they are usually referred to as this subphylum
What are vertebrates/Vertebrata?
This largest monitor lizard is endangered, and climate change is expected to lead to a substantial decline in suitable habitat
What is the Komodo dragon?
These insects, which form the infraorder Anisoptera, are some of the most efficient hunters in the animal kingdom
What are dragonflies?
Mudskippers live in this zone which is above water at low tide and submerged at high tide
What is the intertidal zone?
Under various forms of environmental stress, corals undergo this process, in which they expel the single-celled organisms that live inside them, which are responsible for most of their coloration
What is bleaching?
Aquatic mammals include otters, pinnipeds, cetaceans, and many others, including this order, including the dugong and the 3 species of manatees
What are sea cows/sirenians/Sirenia?
David's Tiger, despite its name, is not a species of felid, but rather a critically endangered species of this type of large-winged insect
What is a butterfly?
This marsupial produces cubic feces, which may help keep them in place to mark territory
What are wombats?
When an animal or other lifeform is native to one location and found nowhere else, it is said to be this to the location, like for example the platypus to Australia
What is endemic?
Among the most basal groups of animals are the Ctenophora, commonly called comb jellies, and Porifera, these creatures which are stationary as adults
What are sponges?
There is debate about whether the most closely related animals to Arthropods are velvet worms or these microscopic creatures
What are tardigrades/Tardigrada?
This species of porpoise found in the Gulf of California is on the brink of extinction; there may be as few as 10 individuals left
What is the vaquita?