The Blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale. It is the largest animal known to have ever existed. The Blue whale was once abundant in nearly all the Earth's oceans until the end of the 19th century. It was hunted...
The axolotl (Ambystoma mexicanum) is a paedomorphic salamander related to the Tiger salamander. Axolotls are unusual among amphibians in that they reach adulthood without undergoing metamorphosis. Instead of taking to the land, adults remain aquatic...
The Sperm whale or cachalot (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator. It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the...
The leatherback sea turtle (Dermochelys coriacea ), sometimes called the lute turtle or leathery turtle or simply the luth, is the largest of all living turtles and the heaviest non-crocodilian reptile, reaching lengths of up to 1.8 metres and...
The Sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. They are the heaviest members of the weasel family, but among the smallest marine mammals. Unlike most marine mammals, the sea...
The American crocodile (Crocodylus acutus) is the most widespread of the four extant species of crocodiles from the Americas. It is also one of the largest crocodile species. Males can reach lengths of 6.1 m (20 ft 0 in), weighing up to 907 kg...
Vaquitas (Phocoena sinus) are record-holders among all cetaceans. Thus, these animals are the smallest cetaceans, meanwhile being the smallest porpoises; they have the smallest range; and finally, vaquitas are the most critically endangered cetacean...
The California condor (Gymnogyps californianus) is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured; it has since been reintroduced to northern...
The Green sea turtle (Chelonia mydas) is a species of large sea turtle of the family Cheloniidae. The common name of this species refers to the usually green fat found beneath its carapace, not to the color of its carapace, which is olive to black....
The loggerhead sea turtle (Caretta caretta ), is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around 90 cm (35 in) in carapace length when...
The Fin whale (Balaenoptera physalus) is a cetacean belonging to the parvorder of baleen whales. It is the second-longest species of cetacean on Earth after the Blue whale. American naturalist Roy Chapman Andrews called the fin whale "the greyhound...
The Hawksbill sea turtle (Eretmochelys imbricata) is a critically endangered sea turtle belonging to the family Cheloniidae. It is the only extant species in the genus Eretmochelys. The Hawksbill sea turtle has a global distribution; it lives part...
The Desert tortoise (Gopherus agassizii), is a species of tortoise native to the southwestern United States and northwestern Mexico. Desert tortoises grow slowly and live about 50 to 80 years. They can tolerate water, salt, and energy imbalances on...
The olive ridley sea turtle (Lepidochelys olivacea ), also known commonly as the Pacific ridley sea turtle, is a species of turtle in the family Cheloniidae. The species is the second-smallest and most abundant of all sea turtles found in the world....
The West Indian manatee (Trichechus manatus) is the largest member of the aquatic mammal order Sirenia (which also includes the dugong and the extinct Steller's sea cow). Manatees are obligate herbivores, have developed vocal communication...
The Chimney swift (Chaetura pelagica) is a highly aerial bird belonging to the swift family Apodidae. A member of the genus Chaetura, it is closely related to both the Vaux's swift and the Chapman's swift; in the past, the three were sometimes...
The Sei whale (Balaenoptera borealis) is a baleen whale, the third-largest rorqual after the Blue whale and the Fin whale. It inhabits most oceans and adjoining seas and prefers deep offshore waters. The whale's name comes from the Norwegian word...
Kemp's ridley sea turtle (Lepidochelys kempii ), also called the Atlantic ridley sea turtle, is the rarest species of sea turtle and is the world's most endangered species of sea turtle. It is one of two living species in the genus Lepidochelys (the...
The North Pacific right whale (Eubalaena japonica ) is a very large, thickset baleen whale species that is extremely rare and endangered. The Northeast Pacific population, which summers in the southeastern Bering Sea and Gulf of Alaska, may have no...
The Evening grosbeak (Hesperiphona vespertina) is a passerine bird found in North America. The genus Hesperiphona was introduced by Charles Lucien Bonaparte in 1850; it originates from Ancient Greek and Latin words and means "evening" and "cry."
The military macaw (Ara militaris ) is a large parrot and a medium-sized macaw that gets its name from its predominantly green plumage resembling a military parade uniform. It is native to forests of Mexico and South America and though considered...
The long-tailed duck (Clangula hyemalis ), formerly known as oldsquaw, is a medium-sized sea duck that breeds in the tundra and taiga regions of the arctic and winters along the northern coastlines of the Atlantic and Pacific Oceans. It is the only...
The Common box turtle is a species of a box turtle that lives in the Eastern United States and Mexico. This turtle gets its common name from the structure of its shell which consists of a high domed carapace (upper shell), and a large, hinged...
The northern fur seal (Callorhinus ursinus ) is an eared seal found along the north Pacific Ocean, the Bering Sea, and the Sea of Okhotsk. It is the largest member of the fur seal subfamily (Arctocephalinae) and the only living species in the genus...
Geoffroy's spider monkey (Ateles geoffroyi ), also known as the black-handed spider monkey or the Central American spider monkey is a species of spider monkey, a type of New World monkey, from Central America, parts of Mexico and possibly a small...
The Cozumel raccoon (Procyon pygmaeus ), is a critically endangered species of island raccoon endemic on Cozumel Island off the coast of the Yucatan Peninsula, Mexico. It is also called the pygmy raccoon, dwarf raccoon, Cozumel Island raccoon, and...
The yellow-headed amazon (Amazona oratrix ), also known as the yellow-headed parrot and double yellow-headed amazon, is an endangered amazon parrot of Mexico and northern Central America. Measuring 38–43 centimetres (15–17 in) in length, it is a...
The white-lipped peccary (Tayassu pecari ) is a species of peccary found in Central and South America and the only member of the genus Tayassu. Multiple subspecies have been identified. White-lipped peccaries are similar in appearance to pigs, but...
The thick-billed parrot (Rhynchopsitta pachyrhyncha ) is a medium-sized parrot endemic to Mexico that formerly ranged into the southwestern United States. Its position in parrot phylogeny is the subject of ongoing discussion; it is sometimes...
The black-legged kittiwake (Rissa tridactyla ) is a seabird species in the gull family Laridae.This species was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae as Larus tridactylus. The English name is derived...
The Mexican agouti (Dasyprocta mexicana ), also known as the Mexican black agouti, is a species of rodent in the family Dasyproctidae. It is native to lowland evergreen forest and second growth in southern Mexico (Veracruz, Oaxaca, Chiapas and...
The Western Pond Turtle (Actinemys marmorata ), also known commonly as the Pacific pond turtle is a species of small to medium-sized turtle in the family Emydidae. The species is endemic to the western coast of the United States and Mexico, ranging...
The red-crowned amazon (Amazona viridigenalis ), also known as the red-crowned parrot, green-cheeked amazon or Mexican red-headed parrot, is an endangered amazon parrot native to northeastern Mexico and southern Texas in the United States. A 1994...
The horned grebe or Slavonian grebe (Podiceps auritus ) is a relatively small waterbird in the family Podicipedidae. There are two known subspecies: P. a. auritus, which breeds in the Palearctic, and P. a. cornutus, which breeds in North America....
The volcano rabbit (Romerolagus diazi ), also known as teporingo or zacatuche, is a small rabbit that resides in the mountains of Mexico. It is the world's second-smallest rabbit, second only to the pygmy rabbit. It has small rounded ears, short...
The eastern spotted skunk (Spilogale putorius ) is a small, relatively slender skunk found in North America, throughout the eastern United States and in small areas of Canada and Mexico.This small skunk is more weasel-like in body shape than the...
The yellow-naped amazon or yellow-naped parrot (Amazona auropalliata ) is a widespread amazon parrot sometimes considered to be a subspecies of the yellow-crowned amazon (Amazona ochrocephala ).. It inhabits the Pacific coast of southern Mexico and...
The American black swift, or more simply black swift (Cypseloides niger ), is a species of bird that is found from northern British Columbia in Canada through the United States and Mexico to Costa Rica and Brazil. They are also found in the...
The California red-legged frog (Rana draytonii ) is a species of frog found in California (USA) and northern Baja California (Mexico). It was formerly considered a subspecies of the northern red-legged frog (Rana aurora ). The frog is an IUCN...
The pinyon jay (Gymnorhinus cyanocephalus ) is a jay between the North American blue jay and the Eurasian jay in size. The voice is described as a rhythmic krawk-kraw-krawk repeated two or three times. It is the only member of the genus Gymnorhinus....
The Florida box turtle (Terrapene carolina bauri) is a subspecies of turtle belonging to the family Emydidae and is one of six extant subspecies of the Common box turtle (T. carolina).
The short-tailed albatross or Steller's albatross (Phoebastria albatrus ) is a large rare seabird from the North Pacific. Although related to the other North Pacific albatrosses, it also exhibits behavioural and morphological links to the...
