Your mission

Felix the fox is a wildlife photographer, and his camera case is locked five ways. Scientists sort animals into groups by what their BODIES are like, not by where they live or how they move. Mammals have fur and feed their babies milk. Birds have feathers. Fish breathe with gills. Reptiles have dry, scaly skin. Amphibians have smooth, wet skin and start life in water. Some animals are very good at fooling people. Look closely and work together.

How to crack a lock

  • Pick any lock from the menu at the top. You can solve them in any order.
  • Read every clue before you start. One clue alone is never enough.
  • Use scratch paper. Draw pictures, make lists, and cross things out.
  • Tap the buttons to build your answer. Then press "Try the lock".
  • A lock will not tell you which part is wrong, so be sure before you try.

My badges

Teacher note

Teachers: type the password to see the answer key.