Pets

This is a good lesson for them in seeing what you do and that they are lucky because they are in the house. It's serious dynamic that they will get to varying degrees.

And kudos to you for your diligence in caring for the outside babies on your doorstep! You have a handful right now but it's also good that you have the time and resources to do it. If I had the space, I'd be doing exactly the same thing. But we don't have many feral cats around here due to the fact that they usually become prey to coyotes, foxes and large birds.