Who Made These Footprints?

 You (Professor Oak) went out for only 30 minutes. When you returned to your lab you noticed that seven of your pok�mon were loose and there were all sorts of paw prints on your new floor! The prints appear to have come from the paws of the same pok�mon, so there could only be one criminal! But who was it??

You look around and see:

  1. A smelly Muk
  2. A weak Pikachu
  3. A sneaky Squirtle
  4. A sleeping Abra
  5. A curious Sandshrew
  6. A snoopy Meowth and
  7. A Magikarp with an unintelligent look on its face.

Upon further inspection you notice that none of the pok�mon had ink on their feet. You also remember that the inkpad located on your desk had been surrounded by heavy clutter. The pok�mon would have had to move the clutter in order to reach the ink.

You also recall that Abra had been sleeping before you left, and Magikarp had been swimming around quietly in it's fish tank.

You have to take action. What do you do??
Question Muk
Question Pikachu
Question Squirtle
Question Abra
Question Sandshrew
Question Meowth
Question Magikarp