If you have ever opened a door at six in the morning to find a cat sitting expectantly beside something small and no longer alive, you have participated in one of the more misunderstood rituals of living with a cat.
The usual explanation you will hear is that your cat is teaching you to hunt. It is a satisfying story. It is also not really what the evidence suggests.
The kitten theory
The explanation researchers tend to favour is less flattering and much more interesting.
Mother cats bring killed and injured prey back to their kittens, first as food and later as practice. It is a normal part of raising a litter. The behaviour is deeply built in, and it does not switch off just because a cat is living in a house with people instead of in a colony with kittens.
Emmanuelle Baudry, an urban ecologist at Paris-Saclay University, has put it about as plainly as it can be put: domestic cats may simply regard their owners as, in her phrase, not so efficient kittens.
Read that again, because it reframes the whole thing. Your cat is not congratulating you. Your cat has assessed your hunting ability, reached a conclusion, and is quietly compensating.
Dr. Stephanie Liff, a veterinarian in New York, takes the kinder reading of the same behaviour: that it is somewhat of a compliment, because it means the cat counts you as family and is comfortable enough to bring food into the shared space.
Both can be true at once. You have been categorised as household, and as household, you are being fed.
The other explanation
There is a second and less romantic theory, which is that your house is simply the safest place your cat knows.
A cat eating outdoors is a cat that can be interrupted, robbed, or become prey itself. A cat that carries something home to the hallway rug is choosing a location where nothing is going to challenge it. Under that reading the delivery is not for you at all. You just happen to live in the safe room.
Which cats do it most
Baudry’s 2023 work in Ecology and Evolution found that the behaviour is not evenly distributed, and the pattern is not the one most people would guess.
Bolder, more dominant, more active cats bring more prey home. Shy and notably friendly cats bring less. Outdoor access and the surrounding environment matter a great deal, which is unsurprising, but the personality effect holds.
So the cat delivering things to your doorstep is usually the confident one. The nervous cat that hides when the doorbell rings is generally not running a delivery service.
What to do about it
Three things are worth knowing.
Do not scold. The behaviour is instinctive rather than deliberate, and punishment tends to produce a cat that hides the prey rather than one that stops hunting.
A bell helps less than you would hope. Collar bells reduce catch rates somewhat but not reliably, and a practised hunter learns to move around them. Keeping a cat indoors at dawn and dusk does considerably more.
Consider what else you are being brought. Plenty of indoor cats run the same behaviour with objects: hair ties, socks, a particular toy, a leaf carried in on somebody’s shoe, deposited by the bed overnight. It is the same instinct, redirected. If your cat has never hunted anything in its life and still brings you a bottle cap at two in the morning, this is what that is.
The version we wrote
This behaviour is, if you look at it from the right angle, a story about a cat who keeps bringing things home to somebody it has decided to look after.
That is more or less the premise of our new book, El gato que trae amigos. Botitas is a black and white cat who lives with an older man named Don Manuel on a quiet street, and Botitas keeps arriving home with new friends. Not prey. Friends. A rabbit. A squirrel. A bird. A puppy. And each time, Don Manuel looks at the newcomer and cheerfully announces that he already knows them, which is not the reaction Botitas is hoping for.
We took the real instinct and asked what would happen if a cat applied it to company instead of food, and if the person receiving the deliveries turned out to have a much wider social circle than the cat expected.
It is out now, in Spanish. We will have more to say about the translation itself in a couple of weeks.
Over to you: what is the strangest thing your cat has ever brought you? The bar in this household is currently held by a single unbroken eggshell.
