Sparky the Dog is a fun little game that my 5-year old really enjoys. The game consists of 12 levels; the object of the game is to move a hungry dog named Sparky through a pastoral landscape while gaining points by jumping and popping bubbles with treats in them (cupcakes, doggy bones, doughnuts, etc.) and absorbing the treats (thus gaining points) before a treat-stealing mouse makes off with the bounty.
Sparky must also defend against a prickly porcupine, who exacts two points from Sparky each time he runs into him. The main method of defense is his bark, which is available on demand and sends threatening creatures scurrying in a hurry.
Sparky must consume more points than he expends before finishing the level in order to move on to the next one. Yet another example of iPhone fun that keeps my 5-year old entertained!