Dogs bring their toys to bed with them. They bring them to bed when they sleep. If you want to know why they do this, you’ll have to ask them. But there is a good chance that they’re just doing what comes naturally. You may not have thought about it before, but you probably do the same thing. There are plenty of reasons why we do things. Some of these reasons are logical, while others are irrational. And sometimes, we don’t even know why we do them.