Everybody knows that dogs and cats are natural enemies. The two species have distinct personalities. Dogs are enthusiastic, affectionate, and don’t have much sense of anyone’s personal bubble. Cats, on the other hand (or paw) are calm, aloof, and like their space.

Of course, there are exceptions to the rule. Some dogs and cats do get along really well! But much of the time, they personify that classic cat and dog friend-enemy relationship.

With any luck, dogs and cats eventually warm up to each other, which means tolerating one another’s presence. They don’t need to become friends, but they do have to live in the same house without knocking each other’s lights out.

If you’re thinking about introducing a dog and cat to one another for the first time, there’s a right way to do it. It’s not a good idea to just toss them in a room together — that method could lead to a brawl.

The best option is to let them sniff each other through a door first. They’ll get used to the new scents without feeling crowded or threatened. Then get ready for the inevitable hilarity of living with a cat and dog.