In the year 2032, mankind seemed to have solved almost every single problem nature has ever brought to them. They annihilated cancer for good, managed to solve poverty in poor countries, and have even managed to create civilizations on other planets, may the need to inhabit a new one arise. Because of all the advancements in technology, pretty much all medical problems were a thing of the far off past, and had small weapons that contained enough power to incinerate people, though it wasn't really required that much is this peaceful future. Although they may have been able to completely destroy almost every disease imaginable, they weren't completely immune to the occasional common cold. Because of all this, they wouldn't be able to defend themselves from the monster that would become of them.
One day an asteroid from seemingly another world flew into the orbit of Earth, crashing into the countryside. Within it was a virus that held the capability to transform its host into a wild, sex-driven animal, who can also spread the virus through bodily fluids. The transformed host even had some pretty endowed tools to go with their new sex drive. The question is...what kind of animal would a host turn into?