I'm looking after my brother's dog right now, and it's only reaffirmed that I prefer cats. I like him, but he's such a needy little asshole. Dogs are a good family pet, far too often people get dogs not realizing just how much attention they really need.
That's the main reason why I prefer cats. Dogs are loyal and great for the family, but I love having my cat. It's way more relaxing living with a cat in comparison to a dog. She's also more intelligent than my parents dog was. Plus cats usually live longer.