Glass Frog
Discovered: 1872
Location: South America
We have actually referenced the infamous Glass Frog before on Science Sensei. However, it is clear that this is one of the most unique animals on the planet and is well-worth discussing again. The frog gets its name in a pretty obvious way. While the general coloring of this frog is usually lime green, its abdominal skin is often transparent or translucent. The version of that varies, however. The frog’s insides can be seen due to this abnormal situation it goes through. You can easily see the internal viscera. That includes the heart, liver, and entire gastrointestinal tract.
Interestingly, while frogs are amphibians and usually close to a water source, glass frogs differ. You’ll actually see them living and hanging out in the trees, which is probably a good thing. A LOT of predators would grab them if they were on the ground as often as other frogs. The species is from South America, yet unlike other frogs from this region, this species does not have a toxin or anything to protect it on the ground. They will come out of the trees during the mating season though. Like humans, the species will risk its life just to brag to its friends about that one time that never really happened the way they claimed it did.