Bombay Night Frog Calling
Egg-Laying Night Frog
A female Bombay night frog lays her eggs after mating. Males release their sperm on the female's back; she then arches her back repeatedly to get them to leave. Then, she lays her eggs and allows the sperm to drip down her back, externally fertilizing her brood.
This is the seventh mating position, or amplexus, ever observed among frogs. Most frogs mate by having the male grasp the female in various positions to bring sperm and eggs close to each other for external fertilization. But in the case of the Bombay night frog, there is no contact during the egg-laying portion of the process.
What Big Cheeks You Have
Calling All Frogs
Frog and Eggs
Bombay night frog nightlife
An infographic depicts the six known frog amplexus positions alongside the newly discovered "dorsal straddle." Researchers also discovered that female Bombay night frogs call, that males have territorial battles, and that snakes eat the frogs' eggs.