List of animals culled in zoos

Culling animals in zoos is the process of segregating animals from a group according to desired or undesired characteristics; the process often ends with the segregated animals being killed. Several reasons are given for culling in zoos, including a lack of space, the genes of the culled animals are over-represented in the zoo population, the (young) animal might be attacked or killed, or the culled animals have contracted a disease.

Source: Wikipedia — List of animals culled in zoos (CC BY-SA 4.0)