Exploring the Frogs!!! They are very unimaginable. They have very different features as expected. Let's go on and explore!!!! Yipeee!!!!!!!!!!!

1. Frog
By Gaurav Malhotra
Biology Project, Grade 7
My Favorite Vertebrate
Why I chose Frog??
I chose the frog because of its special
characteristic of it being able to live in
water and on land. The lack of tail of
the frogs differentiates them from the
other species of amphibians because
only frogs grow into land animals
without having a tail.

2. Characteristics
 Frogs are amphibians(vertebrates).
 All amphibians can live on land and in water.
 Frogs respire through their wet skin in water and through their lungs on land.
 They are cold-blooded which means their temperature keeps fluctuating
depending on the outside environment temperature.
 Frogs can be found near any small water bodies such as ponds and lakes
because they cannot live in the sea or any salt water body.
 The scientific name for frogs is “Anura” which means “without tail”.
 Frogs eat insects and various small animals such as the earthworm.

3. Different Species of Frogs

4. To move in water
With tailFrog grows
lungs to respire
on land
Grows 4 Hind limbs
Anura
(Scientific Name)
Developing of
keratin(protein)
on the skin.
Life Cycle of
a Frog

5. Frog’s Life Cycle
(Explanation)
 Frogs begin their life cycle from hatching of the eggs to small tadpoles with
tails that can only live in water and respire through their gills.
 The tadpoles then slowly start growing 4 hind limbs and become a froglet.
 Then comes the stage where their tails size reduce and the tails are no more
there.
 The froglets then eventually grow lungs to respire on land and are also able to
respire through their moist skin in water bodies. This is the stage where the
Froglets become Adult frogs.
 The cycle starts again by the Adult frogs reproducing the tadpole eggs.

6. Environmental Threats
 One of the most biggest threats to the frogs is the chytrid fungus it is a deadly
skin fungus which has caused extinctions of many amphibian(including frogs)
species and deaths of millions of frogs.
 The chytrid fungus attack's the frog’s skin which creates difficulty for the frog
to breathe and also damages a part of the nervous system.
 If the skin of the frog becomes dry the frog is not able to breathe and absorb
water in water bodies which causes it to die.
 There are many threats to the frogs because of the various human actions and
the environmental factors such as pollution, habitat loss, climate change and
infectious diseases etc.

7. Frog affected by
Chytrid fungus
Normal Frog

8. Conclusion
Key Findings:
 Many Frog species are getting extinct we as humans should do our little bits
towards the society for the frogs.
 Frogs are the only amphibians that grow into land animals without having a
tail.
 The Life Cycle of a Frog starts from the Eggs to the Adult Frog.
 The key characteristics of the Frogs help it survive in various conditions.
Bibliography:
 http://www.kidzone.ws/lw/frogs/facts1.htm
 https://www.britannica.com/animal/Anura
 https://animals.howstuffworks.com/amphibians/frog1.htm
 https://www.youtube.com/watch?v=FIXoJYbBls0
 http://www.environment.nsw.gov.au/animals/FrogChytridFungus.htm
 http://www.defenders.org/frogs/threats
 http://www.deccanherald.com/page_images/story_images/2017/06/20/618349_thump.jpg