How do I control my frog?
As soon as you touch one of the two frogs on the display you can control it. The frog will jump when you drag and drop it over the display. When an insects flies in front of his mouth he will try to catch it automatically with the tongue. So all you need to do is to make him jump as close as possible to a flying insect.
Try to land on safe ground - the water lily pads. When you jump too far your frog falls into the water and it takes about a second until he swims out again. Then he will crawl onto the water lily pad and you can move him again.
But your time is precious! Beware that your rival frog can catch flying insects meanwhile.
If you want to see the game control in action take a look at the Gameplay Video on the bottom of the right sidebar.