Australia - Twins were always killed by the Arrernte in central Australia.

Russia - In Kamchatka, babies were killed and thrown to the dogs. American explorer George Kennan noted that among the Koryaks, a Mongoloid people of north-eastern Siberia, infanticide was still common in the 19th century and one of the twins was always sacrificed.

Africa - In Africa some children were killed because of fear that they were an evil omen or because they were considered unlucky. Twins were usually put to death in Arebo; as well as by the Nama Hottentots of South West Africa; in the Lake Victoria Nyanza region; by the Tswana in Portuguese East Africa; among the Ilso and Ibo people of Nigeria; and by the Kung Bushmen of the Kalahari Desert. The Kikuyu, Kenya's most populous ethnic group, practiced ritual killing of twins. Lucien Lévy-Brühl noted that, because of fear of a drought, if a baby was born feet first in British East Africa, she or he was smothered. The Tswana people did the same since they feared the newborn would bring ill fortune to the parents.

North America - Native Americans - For the Maidu Native Americans twins were so dangerous that they not only killed them, but the mother as well.

In Thailand the practice was (is) the most common in the northern hill-tribes, especially with the Akha (also known as Aha).

Thailand – Akha - The Akha is the poorest of the hill tribes. They are well known to tourists for their extraordinary costumes and exotic appearance. The Akha originate from Tibet, and have only recently entered Thailand, the first immigrants arriving in 1911. They are less open to change than many other hill tribes, proudly retaining their old customs.

The Akha are deeply superstitious; their religion prescribing exactly how each action should be performed. Any deviation from the correct ‘Akha way’ is believed to lead to disaster. It has been an ancient custom among the Akha people that when twins were born to a family, a curse would be brought on the family as well as on the whole village. Therefore, it was necessary that the villagers immediately killed the babies and destroyed the home of the parents with all their possessions. The parents were then driven from home and were not allowed to return to the village until permission was granted one or two years later.

Infanticide is not common in Thailand now as it has been declared illegal BUT it still happens! Twins are still killed soon after birth or the family is driven out of the village. Twins are not accepted by the hill-tribes!