Researchers from the National University of Singapore have discovered a new reproductive mode in frogs and toads - breeding and laying direct developing eggs in live bamboo with narrow openings - which was observed in the white spotted bush frog (Raorchestes chalazodes).
Adult male Raorchestes chalazodes enters hollow internodes of the flute bamboo Ochlandra travancorica where they vocalise to attract mates. It enters the bamboo with considerable resistance as the narrow openings are often less than 5 to 10 millimetres long and 3 to 4 millimetres wide.