ONE WORD SUBSTITUTION

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Across
  1. 2. A person whose name is not known.
  2. 5. An animal that eats only plants.
  3. 7. A person who thinks only of themselves.
  4. 8. An animal that eats both plants and meat.
  5. 10. A person who always looks on the bright side of things.
Down
  1. 1. An animal that eats only meat.
  2. 3. A person who loves books.
  3. 4. A person who always sees the negative side.
  4. 6. A doctor who treats animals.
  5. 9. The inability to sleep.