Tag Archive: frog


Southern gastric-brooding, the frog that gives birth through mouth

The Southern gastric-brooding frog is known to few as the Platypus frog, however, many of us know it as the `frog that gives birth through mouth’.

Southern gastric-broodingIt is a fact that following external fertilization by the male, the female would swallow the fertilized eggs.  It was never observed and hence not clear whether the eggs were laid on the land or in the water. While inside the female, the young ones developed into tadpoles and subsequently into froglets after which they were expelled into the mouth and then crawled out from the protective world to the real world.  During this entire period (ranging between 6 to 7 weeks) when the female held the fertilized eggs inside her stomach till the froglets were expelled, the female would not eat anything and her digestive process would automatically shut down.  The only source of respiration for the female would then be the gas exchange through her skin.

The Southern gastric-brooding frog was a native of Australia and was first discovered in 1972 (reported in 1973) in pristine rainforest in the ranges in south east Queensland, where it occupied a small range of less than 1,400km2.  They were neither strictly nocturnal nor diurnal and although good swimmers, they were not very active and stayed still (floating or drifting) for hours in the water. Small insects from both land and water were the main feed for these frogs whereby the prey was caught with the tongue and forelimbs were then used to manoeuvre the prey into the mouth. While the soft-bodies insects were eaten at the water surface, the harder ones were consumed underwater.

In addition to the unique style of reproduction, another interesting fact associated with the Southern gastric-brooding frog was that the females were larger than the males.

The last of the species was seen in 1981, while a captive specimen in a laboratory died in 1983.   Now believed to be extinct, the cause/s of the gastric-brooding frog’s extinction is however not clearly understood, although many attribute the extinction to degradation, pollution, loss of habitat loss and some fungal infection.  In fact, it is now established that the southern gastric brooding frog was one of the first of a series of amphibian extinctions that occurred within Queensland around the late 1970s until the early 1990s.

The only other gastric-brooding frog was the Northern gastric-brooding frog, which too is considered extinct.


Frog: Innocent or Killer, amazing species

Many of you would be familiar with this small jumping animal named frog, normally found in ponds, lawns of cities and towns.
Its inner body system i.e: Digestive System, resembles to Human Body’s system and hence, it is widely used by Medical students to understand the basic anatomy of Humans.

Another funny similarity of frogs with Humans is that a group of frogs is called an Army.


Some details about Frogs:

Frog stands in the category of amphibians ( Frogs, toads and salamanders etc ). Most of the species have short body while there common characteristics are their flexible eyes and long powerful legs that help them to jump.

There are about 5,000 species of frogs discovered and it is believed that many of them are yet to discover.


The Killer Frog:
If you have been thinking of frog as an innocent creature, think again. There are some frogs that can kill a human being in seconds, infact there one drop of poison is enough to kill many humans. The Golden Poison Dart Frog’s skin produce such a powerful toxin that a Human can die immediately, if the frog is touched directly.

It is also confirmed that this frog has killed many humans. It is found in Columbia. Its skin consists of alkaloid poison that is highly toxic for humans.


Some other amazing species of frogs:

  • Bornean Flat-headed Frog:

One of the most amazing species of frogs, it has no lungs and it breathes through its skin. They are found in rainforests of Indonesia.

Image Credit: Photobucket David Bickford

  • Wood Frog:

This amazing frog can survive after getting frozen and its heart also stops beating but some amount of glucose in its blood keeps the important organs from freezing. After change of weather, the frog starts melting and once again live on.

Image credit: Flickr Ontario Wanderer

  • Goliath Frog:

It is the largest species of frog that can grow up to 13 inches and weighs upto 3 KG. It is found in Equatorial Guinea and Cameroon.

Image Credit: Flickr tomylees

Hope you liked the information, do you know about any other amazing species of frog, if your answer is yes i know that, then please do share it with us in the comments below and we will either add it in the post above or create a new post on your name.