Not with a bang but with a mew

I was 12 years old when the ants rebelled against humanity. I remember how simple and easy life was, before. TV, internet, grocery stores, parades, public transportation - it was all so nice. And now it’s all gone.

We didn’t take it seriously when ants left the dirt and began living above ground. Trillions moved into the walls of buildings, car engines, and any space they fit. For a while, exterminators were swamped, but there were simply too many. We lost the war before we knew it started.

That's only the begining of how the Earth began to exterminate the human race, after the ants, came the cockroaches, millions of them eating all living things.

Then the fungi just went bonkers & blanketed the whole world. They were going to show those insect detritivores who was the real Big Man on Campus. Mushrooms forty stories high sprouted where skyscrapers once stood. Clouds of spores rolled over continents like vast sandstorms.

For the few of us that survived the cataclysm, we were changed. At first it was a white fuzz on my arm, and soon blue gray fungus seemed to climb its way…throughout me. I had an overwhelming need to eat the fungus now covering everything on earth. This only quickened my change.

The fuzz grew denser and seemed to vary in color in different areas. As it overtook my body I felt a pulling on my spine, I soon blacked out. When I awoke I found I could no longer walk upright. I screamed, but the only noise that came out was a loud mew. I had turned into a cat.