Bizarre frog found with FANGS is the only amphibian to give birth to tadpoles without laying eggs

Limnonectes larvaepartus is the only frog species to give birth to tadpoles
It is one of 10 or 12 species that has evolved internal fertilisation
Unusual behaviour was studied in the Indonesian rainforest
Males have two 'fangs' that are used in fighting to avoid being eaten
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