London Zoo

The warthog or common warthog (Phacochoerus africanus, "African Lens-Pig") is a wild member of the pig family that lives in Africa.
The common name comes from the four large wart-like protrusions found on the head of the warthog, which serve the purpose of defense when males fight. They are the only widely recognised species in their genus, though some authors divide them into two species. On that classification, P. africanus is the common (or northern) warthog and P. aethiopicus is the desert warthog, also known as the Cape or Somali warthog.

The African Wild Dog (Lycaon pictus) is a carnivorous mammal of the Canidae family, found only in Africa, especially in scrub savanna and other lightly wooded areas. It is also called the Painted Hunting Dog, African Hunting Dog, the Cape Hunting Dog, the Spotted Dog, or the Painted Wolf in English, Wildehond in Afrikaans, and Mbwa mwilu in Swahili. It is the only species in the genus Lycaon.

The titis, or titi monkeys, are the New World monkeys of the genus Callicebus. They are the only extant members of the Callicebinae subfamily, which also contains the extinct genera Xenothrix, Antillothrix, Paralouatta, Carlocebus, Homunculus, Lagonimico and possibly also Tremacebus.
Titis live in South America, from Colombia to Brazil, Peru and north Paraguay.

The two extant species of two-toed sloths are Linnaeus's (Choloepus didactylus) and Hoffmann's Two-toed Sloth (Choloepus hoffmanni). They are the only members of the genus Choloepus, which name means "lame foot" and are the only living members of the family Megalonychidae. Although similar to the somewhat smaller and generally slower moving three-toed sloths (Bradypus), there is not a close relationship between the two genera. Both types tend to occupy the same forests: in most areas, a particular single species of three-toed sloth and a single species of the larger two-toed type will jointly predominate.

The Golden-headed Lion Tamarin (Leontopithecus chrysomelas) is a lion tamarin endemic to Brazil. It is found only in the lowland and premontane tropical forest fragments in the state of Bahia, and therefore is considered to be an endangered species.