National Geographic Readers: Prehistoric Mammals: Criss Cross

Answer clues based on the content and vocabulary words from National Geographic Readers: Prehistoric Mammals. Look for hints in the Word Bank. Print the puzzle or use on your tablet, phone, or computer.
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Check Puzzle

Across

  • 3. Some prehistoric ___ were as big as the biggest dinosaurs.
  • 4. Some prehistoric mammals had ___ to keep them safe.
  • 7. The first mammals were small and lived among giant ___.
  • 9. The saber-toothed cat used its two swordlike ___ for slicing.
  • 10. Two million years ago, Earth entered an ___ age.

Down

  • 1. ___ mammals are from a time long ago, before people invented written language.
  • 2. A mammal that keeps its baby in a pouch until the baby grows bigger is called a ___.
  • 5. The hornless ___ was the biggest mammal that has ever lived on land.
  • 6. Special ___ could help animals fight, or attract and win mates.
  • 8. Humans that lived during the ice age made weapons of ___.

Word Bank

dinosaurs
prehistoric
rhino
whales
horns
armor
marsupial
ice
teeth
stone