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Southern Darwin's frog tadpoles grow up inside the vocal sacs of their fathers and are 'born' through their mouths as froglets.

“I don’t think we sac bunted once or twice all year, but you need to stay out of a double play, especially when you have Shohei coming up behind you,” Lux said.

It’s the sesquicentennial of Western Australia, and everyone on Tony and Judy’s cul de sac is excited.

At the hospital, Nusslock said she was diagnosed with a premature rupture of the membrane of the amniotic sac — a dangerous complication in which an abortion is a recommended treatment.

The study led by at the University of Exeter Living Systems Institute has revealed how early embryo cells decide between contributing to the foetus or to the supporting yolk sac.