[HIGHLIGHTS] They discover a 'worm' that lays eggs and feeds its young with its own milk

They discover a 'worm' that lays eggs and feeds its young with its own milk. The discovery represents behavior never previously observed in these beings.

The doctor in Toxinology of the Butantan Institute of Sao Paulo, Pedro Mailho-Fontana, and his colleagues, made the discovery while studying the feeding through the skin of the young Siphonops annulatus. It is a worm native to Brazil, 20 to 40 centimeters in length, shiny navy or dark blue, and with thin white rings.