How do you get a sheep in harvest moon island of happiness?

I've been playing harvest moon island of happiness for about 2 years...And i've gotten married and had a child who is now walking and 4 years old...in the game of course!:D But i've expanded my barn once and it was HUUUUUGE!Afterwards i looked in the store that Mirabelle owns and the were NO sheep...At least before the bard upgrade i saved but i've been wanting a sheep for a long time,and i'm in my 22nd year!Suprised?