You got the ducks all mixed with the moles. Why the sheep? and I think you mislabled the cannon and balloon buttons, but I may be wrong because they both just have random animals flying around. No balloons, no cannons. Crazy mini-carnies.
for those having trouble figuring what icon stands for what element ( I was), you can check after each wave when the next wave information pops up you can scroll over the strength and weaknesses icons for descriptions. Green orb = poison, gray fist = physical, lightning bolt = energy, etc.