Small rat, big impact!
When was the last time you saw a small creature with a long tail, scurrying away in some direction in your home? You must've jumped at the sight of the rat, no? In many homes, you will find this long-tailed creature being kept as a pet. But if you go to laboratories, you will also find entire groups of rats undergoing all kinds of experiments, testing your medicine first so that you only get the right doses. So heroic!