On your farm you will be able to have a large variety of animals: cows, ducks, pigs, etc. But you will have to be efficient we it comes to managing it to be able to increase the amount of animals. When you begin the game you will have grass in all the fields so that the ducks can feed off of it. To do so, you will have to water the earth and this will cost your money. But when the ducks eat they will lay eggs and you will be able to sell them at the market for a certain amount of money.
Thus, with Farm Frenzy you will be able to spend the money to buy new animals and make your farm grow. But you will also have to keep a look out for the bears that will try to eat your animals, and you will have to be very fast chasing them off.
Have a good time with Farm Frenzy and build and manage your own farm with all kinds of farm animals.