Types of Captivity
C. n. abingdoni -Pinta (Abingdon) Island (extinct in the wild, 1 captive): C. n. becki-Volcan Wolf and vicinity, north Isabela (Albemarle) Island
The Alagoas curassow ... not much is known about their breeding habits outside of captivity. Alagoas curassow females begin reproducing at about 2 years old.
The Barbary lion (Panthera leo leo) is the nominate lion subspecies in North Africa. It occurred from the Atlas Mountains to Egypt. The population in Algeria, Egypt, Libya, and Morocco is regionally extinct due to excessive hunting.
The Hawaiian crow is the most endangered corvid species in the world and the only species left in Hawaii. Like other critically endangered species, harming the Hawaiian crow is illegal under U.S. federal law. By 1994, the populations dwindled to 31 individuals; 8 to 12 were wild and 19 held in captivity.
The Père David's deer (Elaphurus davidianus), also known as the milu (Chinese: 麋 鹿; pinyin: mílù) or elaphure, is a species of deer that are mostly found in captivity. ...
This fish can also be extremely aggressive, and should never be housed with another red tail shark, or any other fish with a “shark-like” body. Docile tank mates with large bodies should also be avoided (like Mollies and Platys).
The Wyoming toad or Baxter's toad (Anaxyrus baxteri, formerly Bufo baxteri) is an extremely rare amphibian that exists only in captivity and within Mortenson Lake National Wildlife Refuge in Wyoming in the United States. The Wyoming toad was listed as an endangered species in 1984, and listed as extinct in the wild since 1991.