Source: Ива Димова, "A cute axolotl poses on a stone", PublicDomainPictures.net, (Link to Page)
Characteristics
Moist Skin
Feet are webbed, and they have no claws
Their egg lack shells so they must be laid in moist places
Undergoes metamorphosis
Most Amphibians use gills, lungs, and skin for respiration
Fertilized externally
Order of Amphibians
Caudata(Salamanders)
Elongated bodies
Long tail, and most have four limbs
Can be aquatic or terrestrial
Some are internal fertilization
Carnivores
Source: GermanFPhotography, "Fire salamander resting in a forest", PublicDomainPictures.net, (Link to Page)
Gymnophiona (Caecilians)
Can be aquatic or terrestrial
legless, and often blind
Carnivores
internal fertilization
Source: Christine Lamour, "orvet", PublicDomainPictures.net, (Link to Page)
Anura- "tailless" (Frogs)
Frogs (smooth, moist skin) & Toads (rough, bumpy skin) are both part of Anura.
They spend most of their life in the water.
They are carnivores, and their bodies adapt to have the ability to jump.
Their eggs are fertilized externally, and will hatch into larvae (tadpoles).
Source: Manuel Findeis, "European green tree frog sitting isolated on white", PublicDomainPictures.net, (Link to Page)
More Information
Feeding
Larva (tadpoles) are mostly herbivores
Adults are mainly carnivores, who eat insects.
Respiration
Larva (tadpoles) breath through their gills & skin.
Adult frogs have lungs, but because their lung capacity is small they also respire through skin
Mucous glands keep their skin moist
Circulation
Their heart has a double loop, as well as 3 chambers, and the ventricle is partly divided.
Reproduction
Most frog stay with their eggs until they hatch
Some hatch inside their mother's body where they'll stay until they undergo metamorphosis (vocal sacs and stomach)
