Angry cat attack dog

If you've ever tried to share a bed with a golden retriever—or even a tiny dog—you know they take up a ton of space. Between their size, their love for stretching out into everyone's personal space, the room they need to play and exercise, and their stuff (such as a dog bed or dog toys), dogs need a solid amount of room to live a happy, healthy life.

Cats, however, don't need a lot of space to thrive. As long as you can fit their essentials, such as litter boxes (you need one box per cat plus one extra) and food and water dishes, you can pretty much guarantee your kitty will be happy.