Biologists have been studying the mating behavior of a species of flatworm called Macrostomum hystrix. If the animal cannot find a mate it will subject itself to some extreme practices in order to ...

Planarians, flatworms known for their goofy cross-eyed gazes, may have to make an evolutionary trade-off between regeneration and sex – across different species of planarians, the same gene signalling ...

The humble planarian flatworm can regrow its brain. Here’s how this tiny animal will have you rethinking everything you ...