Dogification
Every dog on earth wants to rise up against humans and make their species more populated. They are tired of the human population increasing so much, while theirs is left in the dust. So a group of Dogs was set on infultrating a laboratory. And once they did that, they would drink the Forbidden Intelligience Potions locked away in the Lab-Safe. Most of the dogs didn’t get past security, and were caught. But they were only sacrifices for Doggery the Dog. And Doggery was the only one left to drink the potion. He was successful, and became a Dog with over 900 IQ. He became the smartest living thing on the planet. And with his intelligience, he would create a plague to slowly transform every Human on the planet into a Dog.