I'm a dog person because they love you unconditionally, are always in a good mood and love to see you. Plus you can be a little rough when playing with them or petting them. Cats however, don't seem to care as much about you and they are nice but they randomly turn on you if you were a little rough or something or even if you were just being friendly. They can be mean like that.
Cat, definitely. They are really low maintenance, way smarter than dogs, they don't need to be trained. They make less mess, and they understand their owners more. Believe me I have both dogs and cats. Dogs are not that smart.