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Types of Reptiles: Snakes and Lizards focus. 5 th Grade . Reptiles . Snakes Lizards Alligators Crocodiles Turtles Iguanas. Most reptiles alive today come in the form of . ____________________________ ____________________________. Most reptiles alive today come in the form of….

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Presentation Transcript
reptiles
Reptiles
  • Snakes
  • Lizards
  • Alligators
  • Crocodiles
  • Turtles
  • Iguanas
most reptiles alive today come in the form of
Most reptiles alive today come in the form of
  • ____________________________
  • ____________________________
characteristics of lizards and snakes
Characteristics of Lizards and Snakes
  • Both have skin covered in scales
  • As they grow, they
lizards have several characteristics that make them different from snakes
Lizards have several characteristics that make them different from snakes:
  • Lizards have:
    • 4 legs
    • Claws on the toes
    • Long tails
    • Ears on the outside (external ears)
    • Movable eyelids
    • 2 lungs
snakes are different from lizards in that snakes have
Snakes are different from lizards in that snakes have:

-- No legs

  • No external ears (no ears on the outside)
  • No eyelids
  • 1 lung
how do snakes eat
How do snakes eat?
  • All snakes are carnivores
    • Most feed on mice, but some can feed on larger animals
    • Snake’s jawbones can spread wide apart
    • The snake’s skullcan move to let the snake swallow an animal larger than itself
video of a snake eating an egg
Video of a snake eating an egg
  • http://www.youtube.com/watch?v=LLk4rsCNFFU
snakes capture their prey in different ways
Snakes capture their prey in different ways

1) some snakes have long, curved front teeth for hooking slippery prey

2) rattlesnakes and copperheads have venom glands attached to hollow teeth called fangs

(When snakes bite their prey, venom (poison) flows down through the fangs and enters the prey’s body, killing it)

how lizards eat
How Lizards eat
  • 1) some are HERBIVORES that eat leaves
  • 2) most are CARNIVORES that capture their prey by jumping at it
    • Large lizards eat frogs and birds
    • Small lizards eat insects
movement
Movement
  • Lizards move by walking and running
  • Snakes slither across the ground
    • They slither by contracting (or shortening muscles on the right and left sides )
slide15

Basilisk Lizard: “The Jesus-Christ Lizard” -can run on water –can splash their feet hard against the water, creating an air pocket that keeps them from sinking

video of basilisk lizard running
Video of Basilisk Lizard running
  • http://www.youtube.com/watch?v=JF-UMgdkph4
what is an iguana
What is an Iguana?
  • Type of herbivorous lizard that lives in Mexico, Central America, and Polynesian Islands
  • Can range from 4 to 6 feet
  • Have excellent vision and can see shapes from long distances
chameleons
Chameleons
  • Distinctive type of carnivorouslizards that comes in a range of bright colors
  • Have long tongues that they can rapidly extend from their mouths to eat insects
  • Can change colors based on their body temperature and emotional status
  • The warmer or angrier a chameleon is, the brighter its color becomes
gecko
Gecko
  • Lizard
  • Unique in their vocalizations –use chirping sounds in interactions
  • Have the greatest number of species of lizards (over 1,500)
  • Can lose their tail in defense –autotomy-if a predator catches them by the tail, they can still run away and regenerate (or regrow the tail later)