The capybara or greater capybara is the largest living rodent, native to South America. It is a member of the genus Hydrochoerus. The only other extant member is the lesser capybara. Its close relatives include guinea pigs and rock cavies, and it is more distantly related to the agouti, the chinchilla, and the nutria. The capybara inhabits savannas and dense forests, and lives near bodies of water. It is a highly social species and can be found in groups as large as 100 individuals, but usually live in groups of 10–20 individuals. The capybara is hunted for its meat and hide and also for grease from its thick fatty skin.
The guinea pig or domestic guinea pig, also known as the cavy or domestic cavy, is a species of rodent belonging to the genus Cavia, family Caviidae. Breeders tend to use the name "cavy" for the animal, but "guinea pig" is more commonly used in scientific and laboratory contexts. Despite their name, guinea pigs are not native to Guinea, nor are they closely related to pigs. Instead, they originated in the Andes region of South America, where wild guinea pigs can still be found today. Studies based on biochemistry and DNA hybridization suggest they are domesticated animals that do not exist naturally in the wild, but are descendants of a closely related cavy species such as C. tschudii. Originally, they were domesticated as livestock in the Andean region and are still consumed in some parts of the world.
Caviidae, the cavy family, is composed of rodents native to South America and includes the domestic guinea pig, wild cavies, and the largest living rodent, the capybara. They are found across South America in open areas from moist savanna to thorn forests or scrub desert. This family of rodents has fewer members than most other rodent families, with 19 species in six genera in three subfamilies.
The domestication of small mammals to keep as pets is a relatively recent development, arising only after large-scale industrialization. Historically, Western society was more agrarian than today, with rodents as a whole seen as vermin that were carriers for disease and a threat to crops. Animals that hunted such pests, such as terriers and cats, were prized.
Caviinae is a subfamily uniting all living members of the family Caviidae with the exception of the maras, capybaras, and Kerodon. The subfamily traditionally contained the guinea pig or cavy-like forms along with the cursorially adapted (running) Kerodon. Molecular results suggest the Caviinae as so defined would be paraphyletic and Kerodon is more closely related to maras and capybaras than to other caviines. This led Woods and Kilpatrick (2005) to unite Kerodon and capybaras into the subfamily Hydrochoerinae within the Caviidae. These studies also suggest Microcavia and Cavia are more closely related to one another than either is to Galea.
The black-tailed prairie dog is a rodent of the family Sciuridae found in the Great Plains of North America from about the United States–Canada border to the United States–Mexico border. Unlike some other prairie dogs, these animals do not truly hibernate. The black-tailed prairie dog can be seen above ground in midwinter. A black-tailed prairie dog town in Texas was reported to cover 25,000 sq mi (64,000 km2) and included 400,000,000 individuals. Prior to habitat destruction, the species may have been the most abundant prairie dog in central North America. It was one of two prairie dogs described by the Lewis and Clark Expedition in the journals and diaries of their expedition.
The rock cavy or mocó is a cavy species endemic to eastern Brazil which has also been introduced to the Atlantic island of Fernando de Noronha.
The genus Kerodon contains two species of South American rock cavies, related to capybaras and guinea pigs. They are found in semiarid regions of northeast Brazil known as the Caatinga. This area has a rocky terrain with large granite boulders that contain rifts and hollows where Kerodon species primarily live.
The Patagonian mara is a relatively large rodent in the mara genus Dolichotis. It is also known as the Patagonian cavy or Patagonian hare. This herbivorous, somewhat rabbit-like animal is found in open and semiopen habitats in Argentina, including large parts of Patagonia. A population has also been recorded in the northern United Arab Emirates, possibly as a result of escaped pets or captive animals. It is monogamous, but often breeds in warrens shared by several pairs.
Cavia is a genus in the subfamily Caviinae that contains the rodents commonly known as the true guinea pigs or cavies. The best-known species in this genus is the domestic guinea pig, Cavia porcellus, a meat animal in South America and a common household pet outside that continent.
The Brazilian guinea pig is a wild guinea pig species found in Argentina, Brazil, Bolivia, Colombia, Ecuador, Guyana, Paraguay, Uruguay and Venezuela.
Santa Catarina's guinea pig or Moleques do Sul cavy is a rare guinea pig species of southeastern South America.
The montane guinea pig is a species of caviid rodent found in the Andes in South America. The montane guinea pig is the likely main ancestor of Cavia porcellus, the domestic guinea pig or domestic cavy, which appears to be a hybrid that includes lesser genetic contributions from other Cavia species.
Cavia guianae is a guinea pig species from South America. It is found in southern Venezuela, Guyana, and portions of northern Brazil. Some biologists believe it to be a feral offshoot of the domestic guinea pig, Cavia porcellus; others subsume it under the wild cavy, Cavia aperea. Molecular data collected show there is little genetic differentiation in C.a. guianae known to be a lowland locality in comparison to C. anolaimae which are predominantly highland populations.
The black caracara is a species of bird of prey in the family Falconidae found in Amazonian and French Guianan lowlands, occurring commonly along rivers. They are locally referred to as Ger' futu busikaka in the Republic of Suriname, and juápipi {nẽjõmbʌ} by the Emberá of Panamá and Colombia. However, both of these names refer to multiple bird species within the Falconidae. German-Brazilian ornithologist Helmut Sick also referred to this species as gavião-de-anta, literally translating to "tapir-hawk".
The red-throated caracara is a social species of bird of prey in the family Falconidae. It is placed in the monotypic genus Ibycter, or sometimes united in Daptrius with the black caracara. Unique among caracaras, it mainly feeds on the larvae of bees and wasps, but also takes the adult insects and fruits and berries.
The chimango caracara also known as chimango or tiuque is a species of bird of prey in the family Falconidae, the falcons and caracaras. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, and Uruguay, as a vagrant on the Falkland Islands and has been introduced on Rapa Nui.
The common yellow-toothed cavy is a species of rodent in the family Caviidae, closely related to the domesticated guinea pig. It is found in Argentina, Bolivia, Chile, and Peru. Its karyotype has 2n = 68 and FN = 136. G. musteloides is the most common and widely found member of Galea, and is present at elevations ranging from 20 to 5000 m above sea level. It has yellow teeth.
The Muenster yellow-toothed cavy is a species of rodent in the family Caviidae. It is known only from one location in Valle Hermoso in the Bolivian Andes, at an elevation of 2,557 m (8,389 ft). Specimens from this location were shipped to Muenster, Germany, in 1997 for laboratory research, where the species was recognized and described. Galea monasteriensis was recognized on the basis of morphological, behavioral, and reproductive differences from related species. However, its habits in the wild have not been studied.
Galea is a genus of South American rodents of the family Caviidae. 5-6 extant species are known, found in Argentina, Bolivia, Chile, Peru and Brazil. They are:
