When I was younger, we had a pet guinea pig. It was a very affectionate animal and loved attention. When we got a new puppy, both animals became quick friends. At that point they were almost the exact same size. They loved to chase each other around and play together. They would run under the couch and all over the living room. Often the guinea pig would chase the dog around and knew how to keep the little puppy in line.
Then the puppy got bigger. We would see it chase the guinea pig under the couch and charge under full speed... and get its bigger head stuck. Naturally it became a normal sized dog, and the guinea pig stayed the same size. But the dog was still terrified of this guinea pig. Whenever the dog bothered the guinea pig, the little rodent would charge at the dog and scare it away.
Every man dies, but few truly live. Live your life to its fullest, every day as if it were your last.