Escape from the Mutants

My name is Ali. Cool fact about me: I am the last human being on Earth.
I am running. Running as fast as my legs will go. My breath is coming in gasps. There is a stitch in my side, but I must keep running, running to save myself. Why am I running so fast? A pack of genetically enhanced animals that are engineered to kill humans are chasing me.
My legs are giving out. Oh, God.I can't run any more. Please, make them kill me fast. I don't want to have to feel them maul me. I can't run. I'm falling. Suddenly, the ground gives out and I fall into a pit. Bad news: the walls are too high for me to climb out. Worse news: the walls are low enough for the animals to jump IN. Finally, some good news: most of the animals run right past me. Only one is left. It is a cat, just like the one I used to have before the bomb hit and everyone was killed. Except for me. My eyes tear up and I squeeze them closed, expecting to die at any moment. It stares at me, trying to decide how it should kill me, no doubt. After an eternity, it tenses and jumps. I curl up into a ball, as if that will help me now. Wait a minute. I'm still alive. Where is it? It is at the other side of the pit. What happened? It takes me several moments before I realize that it jumped over the pit.
With a contemptuous flick of its tail, it races off. As it disappears, I sigh in relief. "Thank you", I murmur. I am safe.... for now. ~Carrington