Characteristics of Reptiles and Amphibians

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Characteristics of Reptiles and Amphibians

• By Brandon Taute

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Skin

• Reptiles
• Tough, dry, scaly
• Protects against injury
• Amphibians
• Thin, moist, no scales
• Contains poisonous glands for protection

Blue Poisonous Dart Frog
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Lungs

• Reptiles
• Suck in air by enlarging thoracic cavity
• No muscular diaphragm
• Amphibians
• Force air into lungs with mouth muscles

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Reptile Heart

• Flexible circulatory system
• Higher blood pressure
• Incomplete separation between right and left
  sides of heart

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Body Structure

• Reptiles have better body support than amphibians
• More efficiently designed limbs for land travel
• Most reptiles walk with legs outward and body
  close to ground

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Largest to Smallest Reptiles

• Largest
• Salt Water Crocodile
• 8 meters on average
• Found around Indian West Pacific Oceans
• Smallest
• Gecko
• Under 20 millimeters
• From Caribbean Virgin Islands

Salt Water Crocodile
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Largest to Smallest Amphibians

• Largest
• Giant Salamander
• 1.5 meters
• Found in Cold Streams in Japan
• Smallest
• Brazilian Frog
• 9.8 millimeters
• Found in Brazil

Brazilian Frog
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Threatened and Endangered Reptiles

• Eastern Indigo Snake
• Threatened
• Alabama Red-bellied Turtle
• Endangered
• Atlantic Green Sea Turtle
• Endangered

Extinct Reptiles
Alabama Red-bellied Turtle
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Threatened and Endangered Amphibians

• Flatwoods Salamander
• Threatened
• Red Hills Salamander
• Threatened

Extinct Amphibians
Flatwoods Salamander
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Skin Review
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Jeopardy
Next
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Skin 100

• Which species contains poisonous glands for
  protection?
• Answer

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Lungs 100

• Which species sucks air into its lungs by
  enlarging the thoracic cavity?
• Answer

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Amphibians
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Reptiles
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Cited

• http//animals.about.com/od/onlinecourses/a/endang
  eredamphi.htm
• http//animals.about.com/od/onlinecourses/a/endang
  eredrepti.htm
• Hickman et al. 2006. Integrated Principles of
  Zoology. 13th ed.

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