Switch the animals to make the two images identical.
61 levels with more levels in the future.
Two play mode: time and step.
Try to be as quickly as possible in time mode.
But be wise in both mode, you have to move the animal wisely to get the minimum step.
Some levels are easy, but some are hard and you need to think very carefully before one move. If you are run out of move or time, still you can ask friend for help in Facebook or Twitter to get extra time or step to continue.
Good for time killer and of course interesting.