The snake by Juani S

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The snake by Juani S

  1. 1. THE SNAKE
  2. 2. THE SNAKE  They are reptiles, legless (without legs) and carnivorous (meat eaters).  They don’t have eyelids and external ears (like lizards)  Covered by scales.  3.400 species  Found on every continent (except Antartica)
  3. 3. Biology Size: There are some 10 cm long and others of 9 meters (pythons and anacondas)
  4. 4. Smell: Snakes use smell to track their prey. They use their tongue (fork tongue).
  5. 5. Infrared sensitivity Pit vipers, pythons, and some boas can “see” the heat. Snakes have cold blood but they can see warm animals (like a mouse).
  6. 6. Skin The skin is covered in SCALES. And it is dry. They change their skin many times like taking out a sock.
  7. 7. Skeleton
  8. 8. Diet  Some species like cobras and coral snakes, use venom to paralyze or kill their prey before eating it. The venom is modified saliva  Others kill by constriction  They eat small animals including lizards, other snakes, small mammals, birds, eggs, fish, snails or insects
  9. 9. Kill by constriction
  10. 10. Winter dormancy  In regions where winters are colder than snakes can tolerate, local species will brumate. Unlike hibernation, in which mammals are actually asleep, brumating reptiles are awake but inactive.  Individual snakes may brumate under rock piles, or inside fallen trees, or snakes may aggregate in large numbers.
  11. 11. Feeding  All snakes are carnivorous but they cannot bite or tear their food to pieces, they must swallow prey whole. The body size of a snake has a major influence on its eating habits. Smaller snakes eat smaller prey. Juvenile pythons might start out feeding on lizards or mice and graduate to small deer or antelope as an adult, for example.
  12. 12. Bite  Snakes do not normally prey on humans. Most snakes prefer to avoid contact and will not attack humans. With the exception of large constrictors, nonvenomous snakes are not a threat to humans. The bite of a nonvenomous snake is usually harmless; their teeth are not designed for tearing but rather grabbing and holding. The possibility of infection is present in the bite of a nonvenomous snake.
  13. 13. THANKS FOR WATCHING By: Juana Sturla.

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