The topiaries in Farmville are bushes or trees that were trimmed very carefully to form an animal-like figure. When you are putting them in your farm and you are designing your garden, you can rotate them in only two different directions and they are always facing the user.
Some of them are sent as a gift, normally in the Mystery Gift box. You can also buy them using coins and they range from the cheapest, the Horse Topiary which costs 100 coins to the most expensive, the Buffalo Topiary which costs 5,500 coins. There are three topiaries that can only be bought with FV cash and they are the Sheep (5FV), the Llama (10FV) and the Flamingo Topiary (15FV).