Animals
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Livestock includes cows, chickens, and sheep, which produce milk, eggs, and wool respectively. Work animals include a dog and horse, which can be acquired after meeting certain criteria. The dog protects livestock, and the horse can be ridden and used for farm work.
Marriage
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As in other games in the Harvest Moon series, Island of Happiness offers players a chance to marry. Marriage is only possible once you have met everyone in the game. If playing as a boy, there are six bachelorettes to choose from: Natalie, Witch Princess, Julia, Lanna, Sabrina, and Chelsea. Playing as a girl, there are also six eligible bachelors: Vaughn, Denny, Shea, Pierre, Elliot, and Mark. The couple can also have a child, after a month of marriage. This child progresses only so far as to begin to crawl, toddle, and speak.