Amphibians

well.all mammals do expect the platapus

A frog's digestive system obviously begins with its mouth. Although frogs have two sets of teeth in the buccal cavity, they do not use them to eat their prey. These are used to hold the prey until it can be swallowed. The male frogs have a pharynx, which is in the throat on the way to the esophagus.

thin and dry.

happy if that helped

the average lifespan is about 15 years but they can live longer if kept in good condition. some have been reported about 25 years

The French

Simply because snake eggs are less likely to be eaten by predators.

Frogs eggs, floating in water, are potential food for anything that can get to it. Therefore - if a frog lays hundreds of eggs, there's more chance of at least some of them hatching into tadpoles.

According to the Theory of Evolution, all organisms have a shared ancestry.

Also, amphibian is a term that can be used to indicate a particular property (ie. coldblooded organism living both on land and in water) that may belong to groups of organisms stemming independently from divergent clades. Used in this sense amphibians are a paraphyletic group. The term amphibian can also be used to indicate a member of the clade Amphibia, a monophyletic grouping within cladistics.

The most recent ancestor common to Amphibia and Reptilia (which would include Mammalia, under the monophyletic usage) would have belonged to the clade of Tetrapoda. This means that both Amphibia and Reptilia (including Mammalia) are Tetrapoda.

Yes, because when frogs are tadpoles they need to be able to breath under water so they have gills and when they turn into frogs they still have their gills but they form lungs so they can breath on land.

Yes. Toads will eat anything that fits in their mouths as long as it moves first.

Most amphibians undergo metamorphosis during development. The axolotl is an amphibian that does not undergo true metamorphosis, remaining in a semi-juvenile state.

If you would like the whole binomial nomenclature, I can also provide that. Kingdom: Animalia. Phylum: Chordata. Class: Amphibia. And last but not least, Order: Anura.

As pf Jan 17, 2009,, there are 6449 species of amphibians according to AmphibiaWeb (http://amphibiaweb.org/aw/about/index.html). Amphibian Species of the World (http://research.amnh.org/herpetology/amphibia/index.php) gives 6347 as of 15 July 2008. The difference reflects the rate of discovery, which is currently very rapid, although species are going extinct right now faster than they are being discovered.

Excuse me! How could a frog kill a toad. A toad about five times the size of a frog.

Reptiles consume materials in their environment, which is one way they interact with their respective environment. Also, all reptiles are cold blooded, so they depend on their environment to regulate their internal body temperature and maintain homeostasis.

The North American Bullfrog is the state amphibian of Missouri.

With the exception of crocodilians, reptiles and amphibians have only two chambers in their hearts: two atria and a single ventricle. The single ventricle allows oxygenated blood to mix with deoxygenated blood.

they are not endangered but they are very rare because regular frogs can rarely lay a black toad. black toads can only lay about 2 frogs in its live time and they can also be also a common green frog.

they need the water so their sperm can swim to the eggs.

i have heard about 8 weeks.

There are more mammals because of the dinosaurs.

Yes but usually toads only eat live moving things DONT HURT ANIMALS

ANIMAL CRULITY IS WRONG Yes but usually toads only eat live moving things DONT HURT ANIMALS

ANIMAL CRULITY IS WRONG

Reptiles do not have a larval based reproduction. They are hatched (and in a few species live birth) already in the adult phase. Amphibians must go through metamorphose to get to their adult phase.

When the frog opens its mouth, Air flows in because it's in the nature of gases to flow from high pressure to low pressure ( Air to mouth ). When the air is inside the mouth of the frog, it closes its nose trills ( to avoid the escape if any air trapped ) and closes its mouth. When nose and mouth are closed, the air is trapped inside the mouth. Then, the frog raises its jaw which presses the air inside the mouth towards the lungs, because again, air under higher pressure (in mouth) goes to a place where there's lower pressure ( the lungs ). This is positive pressure inhalation.

Then O2 is released from the air to the lungs, and CO2 is picked up. The frog then lowers its jaw, to lower the pressure in the mouth, to let the air travel from the lungs, to the mouth and into the outside,

hope that helped!

Yes, but they still have shells. Their shells are just a moist material instead of a hard one.