动物可以通过孤雌生殖进行无性繁殖，这是一种主要在圈养环境中观察到的罕见过程。 Animals can reproduce asexually via parthenogenesis, a rare process observed primarily in captivity.
一些动物可以通过孤雌生殖进行无配偶繁殖，即雌性的卵子与另一个细胞融合，而另一个细胞通常是前一个过程中留下的细胞。 Some animals can reproduce without a mate through a process called parthenogenesis, which involves a female's egg fusing with another cell, often a leftover cell from a previous process. 这种无性繁殖发生在一些植物、昆虫、两栖动物、爬行动物、鸟类和鱼类中；然而，这种情况很少见，而且主要在圈养环境中观察到。 This asexual reproduction occurs in some plants, insects, amphibians, reptiles, birds, and fish; however, it is rare and mainly observed in captivity. 科学家们了解其发生过程，但不确定其发生原因。 Scientists understand how it happens, but are unsure why it occurs.