To have a unicorn in you're house hold first (between 8pm and 5am) look to see if there are any unicorns you see them by a large cloud white and mixed with colors ( in apploosa plains they can be in fishing areas) but (in sunset valley I haven't came across one yet but ill let you know where they are if there is one) (they have a 40% chance they will show up)first pet it for one or two nights then on the other nights pet it let it sniff you're hand and feed it a treat or produce (it's best to feed it carrots or apples which you buy at the market) keep doing this for as long as you can even if it says ask to invite into house hold keep doing this so you become bff's click on it if it says that after and then it will posibly say prove to me and that means just be friends with 3 sims or 3 cats or 3 dogs or 3 horses or more or a mix and then when it shows up ask it again and you will have a unicorn. You can get more after you got 1 and the unicorns wont change from the start they only change if you have a pet unicorn. To have unicorn foals breed 2 unicorns it wont work with 1 horse and 1 unicorn. Good luck!
Added by: zoelonglegs Feb 4th 2012, ID#16926