![Twitter 上的Project Noah:"Can you hear me? Great details of the vocal sac of this male White-lipped tree frog (Litoria infrafrenata), our Spotting of the Day! https://t.co/kdleGvTN8p https://t.co/FCM0KCdmU4" / Twitter Twitter 上的Project Noah:"Can you hear me? Great details of the vocal sac of this male White-lipped tree frog (Litoria infrafrenata), our Spotting of the Day! https://t.co/kdleGvTN8p https://t.co/FCM0KCdmU4" / Twitter](https://pbs.twimg.com/media/DSp-SZYX4AEb8Vn.jpg)
Twitter 上的Project Noah:"Can you hear me? Great details of the vocal sac of this male White-lipped tree frog (Litoria infrafrenata), our Spotting of the Day! https://t.co/kdleGvTN8p https://t.co/FCM0KCdmU4" / Twitter
Project Noah - Check out that vocal sac! This Jayaram's Bush Frog (Raorchestes jayarami) is our Spotting of the Day! The vocal sac is used by male frogs to amplify their mating
![Novel morphological structures in frogs: vocal sac diversity and evolution in Microhylidae (Amphibia: Anura) | Request PDF Novel morphological structures in frogs: vocal sac diversity and evolution in Microhylidae (Amphibia: Anura) | Request PDF](https://www.researchgate.net/publication/333929537/figure/fig1/AS:1043038105255936@1625691071723/figure-fig1_Q320.jpg)
Novel morphological structures in frogs: vocal sac diversity and evolution in Microhylidae (Amphibia: Anura) | Request PDF
![Common Indian Toad blowing its vocal sac to make train of trills.. #toad #western ghats #Sangli #vocalzation #frog #call | Frog, Toad, Singing Common Indian Toad blowing its vocal sac to make train of trills.. #toad #western ghats #Sangli #vocalzation #frog #call | Frog, Toad, Singing](https://i.pinimg.com/originals/ae/f8/2e/aef82e9adb70296e7651a1f00c9a35b1.jpg)
Common Indian Toad blowing its vocal sac to make train of trills.. #toad #western ghats #Sangli #vocalzation #frog #call | Frog, Toad, Singing
![This frog turns completely yellow for mating except for the vocal sacs which turn blue. : r/interestingasfuck This frog turns completely yellow for mating except for the vocal sacs which turn blue. : r/interestingasfuck](https://preview.redd.it/y0exyst7z2u21.jpg?auto=webp&s=0b540ddf371a208cf5be718632ac3203a6dc9645)
This frog turns completely yellow for mating except for the vocal sacs which turn blue. : r/interestingasfuck
![File:Eleutherodactylus martinicensis with external vocal sac - journal.pone.0022080.g001B.png - Wikimedia Commons File:Eleutherodactylus martinicensis with external vocal sac - journal.pone.0022080.g001B.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Eleutherodactylus_martinicensis_with_external_vocal_sac_-_journal.pone.0022080.g001B.png/640px-Eleutherodactylus_martinicensis_with_external_vocal_sac_-_journal.pone.0022080.g001B.png)