According to Biju, the 12 new species, described in Zootaxa journal, are exclusive to the Western Ghats and one of the ancient groups of frogs that coexisted with dinosaurs. Night frogs (Nyctibatrachus), which are exclusively seen in Western Ghats, have unique breeding behaviour. These frogs successfully complete their breeding without any physical contact between male and female, Biju told the Press Trust of India.