Our alpha calico female has been out enjoying the sun and she (or one of her minions) has left the first of many dead rodents on our front stoop.
As a writer the story possibilities for this behavior is endless. Does the cat care about its human family? Is this a sign of affection? Is it a safe place to store their kills? Is it a bribe to get into the house? Given the affection Calicoy showers on her people I do like to think it is some sort of provider instinct.