amphibian

Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. Modern amphibians are all Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline in amphibian populations for many species around the globe. The earliest amphibians evolved in the Devonian period from sarcopterygian fish with lungs and bony-limbed fins, features that were helpful in adapting to dry land. They diversified and became dominant during the Carboniferous and Permian periods, but were later displaced by reptiles and other vertebrates.
Frog next to a lily. - Frog on the pond by the lily.
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Frog next to a lily.

Added 2 weeks ago by Zeta

43

bumka bumka frog - it is a frog, it is not known if it is poisonous
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bumka bumka frog

Added 3 weeks ago by gabi

49

he will kill the song - puzzles for children
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he will kill the song

Added 2 months ago by magda

91

frog in a red peak - puzzle for preschool children
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frog in a red peak

Added 2 months ago by magda

64

Chick - the chick recomposes
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Chick

Added 2 months ago by rox

57

Beautiful Kumka - Beautiful Croquet on the ponds
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Beautiful Kumka

Added 3 months ago by Kaz

15

pepe - Mem
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pepe

Added 3 months ago by placek

32

Axolotl - Lorem ipsum dolor sit amet
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Axolotl

Added 3 months ago by Ayla

16

Colorful trees - Colorful trees with poisonous frogs
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Colorful trees

Added 3 months ago by Ayla

27

Green trees - A green poison frogfish
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Green trees

Added 3 months ago by Ayla

33

Painted trees - Paintbrush poison dart frog
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Painted trees

Added 3 months ago by Ayla

28

Blue trees - Dove of blue poison frog
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Blue trees

Added 3 months ago by Ayla

50

viper - a viper in the sun that warms up
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viper

Added 4 months ago by ele

88

pets and animals - I've had enough. I'm taking my toys and going to another pond :)
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pets and animals

Added year ago by żaba

11

Green princess - colorful green frog
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Green princess

Added year ago by andi

92 2

small alligator - a small alligator from the Rio Negro - Amazonia
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small alligator

Added year ago by Izka

4

spider - Amazon spider from the Rio Negro
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spider

Added year ago by Izka

2

Almost a model - photo session in the open air
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Almost a model

Added year ago by andi

16

Jigsaw puzzle - complicated puzzle
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Jigsaw puzzle

Added year ago by andi

9

Strawberry - strawberries are very tasty
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Strawberry

Added year ago by andi

45

Monster Inc - Monsters scare children because it's their job, but they are actually scared of them. Once upon a ti
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Monster Inc

Added year ago by inc

13

Frog on the road - Frog on the go with a suitcase
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Frog on the road

Added year ago by Mala

55

lovely animals - frog goes on vacation
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lovely animals

Added year ago by bogumiła

61

animals c.d - frog session on the meadow - they are to be
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animals c.d

Added year ago by stachna

29

green frog - jigsaw puzzles for preschoolers
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green frog

Added year ago by Mateusz

184 1

zielona żabka - z opon zielona żabka
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zielona żabka

Added year ago by Bożenka

95

żaby i żabki - zielone żabki na wakacjach
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żaby i żabki

Added year ago by stachna

97

jeziorne marzenie - to jest jeziorne marzenie razem z żabami
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jeziorne marzenie

Added year ago by Kinga

236

żabie jezioro - żabi krajobraz jeziorne marzenie
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żabie jezioro

Added year ago by Kinga

228

Brązowa ropuszka - Brązowa ropuszka w powiększeniu
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Brązowa ropuszka

Added year ago by Monika

11

żabka na spacerze - zielona żabka na spacerze
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żabka na spacerze

Added over a year ago by Bogna

44

Staw z wesołą żabą - Ciekawe, co ją tak rozśmieszyło?
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Staw z wesołą żabą

Added over a year ago by Maria Teresa

111

żywy parasol - deszcz,żabka,liść,gałąź
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żywy parasol

Added over a year ago by wieslawa

255

żaba w negliżu - fajny kostium żaba ma
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żaba w negliżu

Added over a year ago by Jolanta

61

żaby i żabki - ...żaby na aby aby a rak byle jak
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żaby i żabki

Added over a year ago by stanisława

66