Journal reference: Peer J, DOI: 10.7717/peerj. These frogs also do a brief handstand after copulation and the female deposits her eggs while upside down. The kumbara night frog, for example, is the only amphibian known to coat its eggs in mud, probably to protect them. Unique reproductive behaviour has been observed in related frogs. The team noticed that males sporadically guard eggs after dark but how they might protect them is unknown. “For centuries it was believed that female frogs were mute,” says Iris Starnberger from the University of Vienna in Austria, who studies modes of frog communication.īiju and his colleagues also saw a tree snake eating night frog eggs, which is less usual than preying on the adult amphibians. ![]() The penetrating partner then crouches over them, resting on their feet and hands and enters from behind. In this position, the receiving partner gets down on all fours, resting on their elbows and knees. “At first, we did not think it could be a female.” The night watchįemales of only 25 species of frogs worldwide are known to make vocalisations. The Leap Frog sex position is a variation of the Doggy Style position, but with a twist. “We often heard a feeble whistle-like sound in between the high chorus of male calls,” says Biju. ![]() The males also made mating calls, which are typical in frogs, but the team was surprised to find that females occasionally initiated calls when they couldn’t make contact with a vocal male.
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