Unicorn

Unicorn is a new creature added to the upcoming The Sims 3: Pets. It was announced for the first time on The Sims 3 Pets - Gamescom Trailer (Germany).

Unicorns are mystical, magical creatures that can be added into any family. There are two kinds of unicorns:
 * Good - Good unicorns bless Sims and helps them with gardening.
 * Bad - Bad unicorns curse Sims, brings them bad luck and starts fires.

Trivia

 * When unicorns run, they have a glowing, sparkly kind of mist that trails them. Also, when standing still, a rainbow may autonomously shoot from their mane into the sky (this may only be possible with "good" unicorns).
 * Unicorns are possibly the fastest creatures in The Sims series so far, because of their incredibly fast running ability that most pets don't have.
 * Unicorns can breed with horses, though the foal will either be a horse or a unicorn, with a 50% chance of either species.