Tips:
Cows - Cows may be bought at the Blue Sky Ranch. It is important to brush your cow each day, and make sure she is fed. Hand-feeding her will earn hearts faster. To do this, simply pick up a piece of fodder, stand directly in front of her and press A. If you do this, you do not need to put food in her bin. She will produce one container of milk each day. In order to win the Cow Festival, she must have 9-10 hearts. If your cow wins, it will get a crown next to its name in the menu. This highers the chances that she will produce Special Milk.

Sheep - Sheep are similar to cows in terms of care. It's a good idea to brush and hand feed your sheep every day. When your sheep's coat looks full, it is ready to be sheared. Sheep will produce Dirty Wool at first, but eventually may start producing Shiny Wool more often. Special Wool is random but has a greater chance of being produced if your sheep has a high amount of hearts and/or has won the Sheep Festival.

Horses - In Magical Melody, you can raise multiple horses. You should brush and hand feed your horses every day, and make sure you ride them around the village on nice days. If your horse has a high amount of hearts they have a good chance of winning the Horse Races, which will award them with a Crown by their name. It is possible to raise racehorses and sell them for 50000G, if you don't mind letting them go. The row of stars next to the horse's hearts displays the amount of training it has.

Chickens - Chickens are simple to take care of and there are a few new elements of care in Magical Melody. Picking a chicken up is similar to talking to a barn animal; it will help increase hearts over time. You may hand feed your chickens (preferred method) or place food in their boxes. A chicken will lay an egg every morning as long as its mature and fed the day before. A good technique if you are low on chicken feed is to put the chickens in the field in the beginning of the day, and bring them back in the coop when night falls. They will eat during the day and lay eggs the next morning as long as they are in the coop. If you leave them in the field until the next morning, they will not lay eggs.

Tips:
Wild animals don't serve any purpose in particular but raising hearts with them will make the Harvest Sprites happier, and is better for the village. You can raise hearts simply by picking up a wild animals whenever you find one. The Dolphin, however, will take you to the island if you have multiple hearts with it. The island is a great fishing spot! Feeding the dolphin fish will also raise its hearts, but there is no need to feed any of the other animals.