animals videogames and other things

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Across
  1. 3. a very dificult subjet
  2. 6. the biggest rodent in the planet
  3. 7. an under ground vegetable
  4. 9. the best fried of human
Down
  1. 1. an beutifull flying animal
  2. 2. the animal who says miau
  3. 4. an under water sport
  4. 5. player of videogames
  5. 6. a very big and delicious animal
  6. 8. an orange fruit