Hi!! Have you ever had a dog or cat before? If you haven't I recommend dog, and I think dog is better then cat for pet. This is because if you have a dog for pet you have to walk with dog everyday, so it is good exercise for you. In addition, dog has affectionate then cat. Moreover I think cat is sleep all day long and they don't move very much, so I think there is no merit to spend time with cat. Therefore I think dog is better then cat.