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transparent glass frog The beautiful transparent Glass Frog

Glass frogs are beautiful frogs with a semi-transparent skin

Among the many weird and fascinating amphibians on our planet, very special are the Glass Frogs. This amazing frog family has a transparent skin, allowing you to view inside its small body. They are so transparent that it almost looks as if they melt into the leaves and become one with them.

glass frog The beautiful transparent Glass Frog

A glass frog allows you to see its internal organs

Glass frogs live in and among the trees and plants of humid mountain forests in Central and South America. Higher up the mountain the rainforests are called cloud forests because the trees are almost always covered in clouds. Glass frogs are mostly active at night, which makes them very difficult to spot for predators.

glass frogs on leaf The beautiful transparent Glass Frog

Glass frogs and their eggs. Photograph: Elke Vockenhuber

During the breeding season they live along rivers and streams where they lay their eggs on leaves that overhang the water. When breeding is over, most glass species go back to live high up in the canopy.

Conservationists are especially interested in these beautiful frogs because they may be good bioindicators. A bioindicator is a species that provides clues about the health of the environment where it lives. As the Earth’s weather changes, some of the rain- and cloud forests where Glass Frogs live are becoming too dry, making life difficult for the frogs, as well as other plants and animals. By watching the glass frogs, scientists can learn what impact global warming has on these forests and the amazing species that inhabit them.

glass frog The beautiful transparent Glass Frog

Glass frogs have a lime green skin that is semitransparent, allowing you to peek inside their body

Written by Jolle Jolles

Jolle Jolles is a zoologist working at the University of Cambridge with a love for natural history and animal behaviour and enjoys fascinating others about our weird and wonderful natural world. Follow Jolle on Twitter or sent him a personal message.

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43 Classic comments & 1649 interactions on facebook!

  1. Sannesays:

    Wowie!

  2. Traceysays:

    These frogs are so cool i have never even heard of them before. Very facinating.

    • Hi Tracey, I was also amazed by these transparent frogs. Although there are more transparent animals (mostly invertebrates), it especially suits the green glass frog very well!

      • Robinsays:

        Did you take the pictures?? If you did awesome job!!! Your facts about the glass frogs are helping me for my project! Thanx!! :)

      • Hi Robin. Good to hear my post about the frogs help you with your project! I did not take the pictures, it would have been amazing to see them in the wild.

      • Robinsays:

        Hey Jolle, this is just a random question, but do u have facebook??

      • Jollesays:

        Hi, yes it’s http://www.facebook.com/jollewj. And don’t forget to visit the facebook fanpage at http://www.facebook.com/mudfooted
        Hope to see you back soon!

  3. renssays:

    Ingenieus van de natuur, alles heeft zijn doel! er zijn toch meer dieren in camouflage tooi opgaand inde omgeving?
    Erg fascinerend! Er is zoveel te ontdekken en weten!

  4. Paigesays:

    thank you for teaching me about these gorgeous frogs! Jolle, I am wondering what year it was you wrote it so that i can reference it please. also, i love your website, it has a very creative design and the animals on it are very interesting.

    • Jollesays:

      Hi Paige, thanks for your nice comment! Good to hear you want to reference it! I wrote it on the 3rd of March, 2010. I am planning to write a couple new posts the next few days but otherwise I am sure you can find something interesting between the other 48 articles :) Thanks!

  5. Robinsays:

    Ok thanx!! Though i can only add u on like friday!!

  6. cupcakesays:

    Hey people! what up i think these animals look the best because these are the cutest glass frogs I’ve seen!

  7. chloesays:

    wow that is amazing

  8. LeeAnnesays:

    Great job. Hey now classes don’t have to dissect the frogs, just hold them up. XP

  9. aylarosesays:

    where did you find them! they are asmazing!

  10. Wow, what an amazing creature. Love your site.

  11. Jennifersays:

    There was a picture of one in my biology textbook, so I decided to google it. Are they poisenous? If not, I want one as a pet.

    • Tillysays:

      Your cranium must be protecting some very vaulalbe brains.

      • Paulasays:

        Even if they are critically endangered at least they are not extinct.

  12. dude this s amazing!
    i mean thanxx a million 4 this s helping me a lot for my project!

  13. although that you are not necessarily hello there for that matter beneath thought.

  14. Herman Cortezsays:

    HI Jolle can you give me some intresting facts about the glass frog that is not listed here on this web page? I need some for my animal project that I am doing thanks hope to hear from you soon.

  15. Mr. Turdsays:

    These are so cool

  16. thanks so much!! i got an A in science because of you!!! i learned a lot!!!! who wouldn’t love a transparent frog! it’s pure awesomeness!!!!thanks again! and do you have any other bizarre creatures you write about?? i want to learn!!!

  17. i am DEFIANTLY recommending this website!!:)

  18. Katyana Spruthsays:

    Hi! I just wanted to know if you have written any other posts about cute but bizzare frogs and animals? I would LOVE to learn more.
    Hey Jenny O’Daniel! I know you!

    • Hi Katyana, there are almost 60 posts on Mudfooted, click the thumbnails in the sidebar for more!

  19. hey Katy!! i know you too!!!!!!!!!!! ha ha! are you doing this for science? :)

  20. Johnsays:

    ALL HAIL HYPNOTOAD!!!

  21. Rodesays:

    Seems like you don’t have to dissect This frog to see what’s in it!!

  22. luissays:

    So wierd and cool I can see his intestines! Thanks

  23. Jessicasays:

    THIS IS RAD (:

  24. Juansays:

    Cool

  25. Bellasays:

    Hi! Thans for posting this! I am using them in a project about Venezuela. I was wondering how many are left and if they are poisonous or not? Thanks! This is totally awesome!

  26. How do you make a free website like this

  27. kool they loook funny.

  28. Meyghan Prycesays:

    I love these facinating creatures! I am constantly looking up new facts about these amazing amphibians and looking for new and unique images of them. Now I am very interested in different animals and these are different looking, weird but great! At the moment I am working on a small project about unique looking animals and their different ways of living. I am trying to aim it at endangered animals, animals within risk of becoming extinct or animals that could become endangered soon. So far I have a long list of different animals (as there are so many odd looking animals and even more that are endangered)! Here are a small amount of the animals that I have put onto my list:
    Glass frog
    Glass fish
    Blow/puffer fish
    Mexican walking fish
    Long eared jerboa
    Sunny fish etc…
    I was wondering as you seem as if you know a lot about animals (endangered or not) whether you could give me a small list on some endangered animals that I could include. Thanks!
    Meyghan
    Xx

  29. Megan Pricesays:

    At the moment at school I am doing a school project on this animal and I have looked at lots of endangered animals. I have mainly looked at the glass frog, glass fish, blow fish, mexican walking fish, long eared jerboa and the sun fish. In the end I decided to go to this website and do the glass frog as they are epic! I am trying to raise awareness to save the glass frog and try to save it. Thanks for giving me lots of great facts for me to add to my leaflet, I am going to include things about its way of living and also things to grab people attention.
    Thanks!
    Megan
    Xx

  30. Frawgxluvrrrrsays:

    O M G this is sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo cool

  31. I love this frog type!!!!!!!!!! They are so cute. I can’t believe u can see right inside them. That is soooooooo cute!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  32. miranda klinesays:

    good goood website

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