Reptiles & Amphibians Documentary E1 Part 3

Reptiles are animals in the (Linnaean) class Reptilia. They are characterized by breathing air, laying shelled eggs, and having skin covered in scales and/or scutes. Reptiles are classically viewed as having a "cold-blooded" metabolism. They are tetrapods (either having four limbs or being descended from four-limbed ancestors). Modern reptiles inhabit every continent with the exception of Antarctica, and four living orders are currently recognized: Crocodilia (crocodiles, gavials, caimans, and alligators)
Sphenodontia (tuataras from New Zealand)
Squamata (lizards, snakes, and worm lizards)
Testudines (turtles and tortoises)

Amphibians (class Amphibia, from Amphi- meaning "on both sides" and -bios meaning "life"), such as frogs, salamanders, and caecilians, are ectothermic (or cold-blooded) animals that metamorphose from a juvenile water-breathing form, either to an adult air-breathing form, or to a paedomorph that retains some juvenile characteristics. Mudpuppies, for example, retain juvenile gills in adulthood. The three modern orders of amphibians:

Anura (frogs and toads),
Caudata (salamanders and newts)
Gymnophiona (caecilians, limbless amphibians that resemble snakes)

Category:

Pets & Animals

Tags:

• Reptiles
• Amphibians
• David
• Attenborough
• turtles
• tortoises
• lizards
• snakes
• worm
• tuataras
• crocodiles
• gavials
• caimans
• alligators
• frogs
• toads
• salamanders
• newts
• caecilians

[thoemke2010]

15th yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah yeah

[lideadman01]

fuck you alll yeah yeah yeah yeah

[Wikkler]

14th yea yea yea yea yea yea yea yea yea yea yea yea yea yea

[wwe3466]

Frog Wrestling  :D

[mumbenning]

12 yea yea yea????

[mcgunnaboy123]

11 yea yea yea

[UndeadRussianLord]

10th yeh yeh yeh yeh!!!

[CityLights452]

now i miss my gecko...

[beaconnell]

I have a leo gecko and i just found how he would have sex

[mtjk20]

7th yea yea yea yea yea yea yea