Cats Don't Need to Be Walked
It doesn't matter if there's a tornado, hurricane, blizzard, alien invasion or a serial killer on the loose in your neigthborhood, Fido still needs to be taken outside for a walk to do his business. On the other hand, you'll be safe indoors during the zombie apocalypse if you own a cat -- when the independent feline needs to relieve herself, she'll simply retreat to her litter box without inconveniencing you.