We don’t call them bundles of joy for no reason. Swaddling can keep babies calm, prevent them from rolling over in their sleep, and help them drift off to slumberland easier because it simulates our motherly touch. It can also be risky if we slack on technique, so it’s crucial that we get some practice runs in before it’s time to do the real deal.
You can’t knock on your neighbor’s door and ask to borrow their kid the way you might ask to borrow a cup of sugar, so you make do with what you have. Your pets are your other babies anyways. They’re just hairier and eat a little differently. They might also be way less cooperative about swaddling than an actual baby, but they’ll help you get the job done.