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Vertebrates: Reptiles and Amphibians

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by

Casey Lambert

on 4 May 2015

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Transcript of Vertebrates: Reptiles and Amphibians

Reptiles
Amphibians
Amphibians and Reptiles have 2 things in common:
They are all ectotherms.
They have 4 limbs.
Even snakes have 4 limbs, even though they are basically useless now.
Mmm... tastes like chicken :)
(Frog legs)
Hot, hot, hot!
Limbs can be legs or flippers.
Reptiles have lungs and cannot breathe underwater. For this reason, they are more adapted to living on land.
Amphibians have lungs to breathe above water, and can absorb oxygen through their skin.
Why? Amphibians, like frogs, spend part of their life underwater (as tadpoles) and part on land (adult frogs). 80% of their breathing is done through their skin!
Amphibians have moist, slimy skin. Some shed their skin to keep it fresh as often as every day!
They have adapted ways of holding their breath for a long time. Crocodiles are able to breathe and swim at the same time because their nostrils are located on top of their snout which can be above water as they stalk their prey.
Reptiles eggs have shells and females lay these eggs on land.
Amphibian eggs do not have shells, and for this reason females lay the eggs in water.
Reptiles have rough scaly skin that can protect them from intense heat from the sun.
Reptiles defend themselves in several different ways, including venom, biting, squeezing something to death, or camouflage.
Many amphibians have brightly colored skin to warn predators "Stay away! I'm POISONOUS!"
Examples: frogs, salamanders, toads, and newts
Examples: snakes, crocodiles, alligators, turtles, lizards
Wanna see the cutest frog ever?? Get ready... HE'S ADORABLE!
Wanna see a super weird frog? Get ready... HE'S SUPER WEIRD!
~ 7,000 species
~ 5,000 species
The skin can be used to help with warming and cooling body temperatures, and as a mode of defense.
Full transcript