In a secluded area of the world, a small town thrives, building itself up upon the land it's inhabitants use to farm. Many of the people here are now attached to new technology, such as smartphones and computers. Many others still work on the land day and night.
In another part of the world, a single scientist worked to create a virus. This virus, labeled the FUR-V1RU5, was made capable to transforming its host into a male anthropomorphic animal that hungers for sex. Any infected "Furry" that has sexual or fluidly contact with an uninfected human will cause the human to become infected themselves, turning into a furry that is of a similar animal species to the original infector within minutes. Occasionally, the virus will steer a different way when someone is infected, causing them to become a completely different animal than the original infector. Normal wild animals affected by the virus will become more sexually active, while the rule of infectious fluids still apply. More details show the most infectious fluid of the infected body is semen.
After the scientist was done with his creation, he sent it to a random person's doorstep in the world (Don't ask how).
It landed at the doorstep of Jack, your average human male with his own average goals in life.
He always hated furries, going online to harass them for no reason. All of that was going to change.
He picked up the small box left on his doorstep, shaking it slightly to see what was inside. "Huh, I wonder who left this here. Since I got nothing better to do, I suppose I'll check what's inside." He took the box inside, quickly opening it to see a small pill. He looked at it a moment, befor picking it up and tossing it into his mouth. "You only live once." He went back to watching a little bit of TV before work, until several minutes later...the changes started happening.
(Please try to keep all transformations male only.)