Two Headed Snakes

- In 2007, Mary Grace and Mary Divine Asis were born in the Philippines having only one heart.
On August 25, 2008, a baby boy named Kiron was born with two heads in south-western Bangladesh. Kiron had been born from one embryo but a serious development anomaly had been present resulting in the double heads. The baby was described by the gynaecologist present at the birth as having "one stomach and he is eating normally with his two mouths. He has one genital organ and a full set of limbs". He died three days later on August 28.
- In July 2009, a pair of dicephalic twins were born in Indonesia with two hearts, and sharing all other internal organs.
Craniopagus parasiticus - parasitic twin head with an undeveloped (or underdeveloped) body attached to the head of a developed twin: