Gynecologist Varasteh, who confirmed the report said the woman whose period had stopped for six months underwent a sonography in May which showed she had a cyst in her abdomen, wrote the Farsi-language daily E'temad in its Sunday's edition.

Following severe bleeding, the woman who has not been named gave birth to a live gray frog accompanied with mud.

Varasteh believes the frog larva has most likely entered and grown in the woman's body.

Other physicians argue that the larva has found its way into her body while she was swimming in a dirty pool, turning to a frog after the fetus has grown.

And some specialists blame genetic disorders, saying the so-called frog has similarities with the human's fetus.

The woman has two healthy children.