Coga's problem - logic game

Coga's problem is a free online flash game of the category logic games.

Farmer Coga raised a lot of livestock, he needs an assistant to help him catch these animals back to farm ,can you help him?

Farmer Coga need you help! Match up the animals and save the farm! But don't let the animals escape over the fence! If too many of them escape ,the farmer will have to start over.