A  pet is a  companion animal is an animal kept primarily for a person's company
yes, I guess cats and dogs are the most common pets, but there are some variety in there too.
One thing that gets people hooked on popular pets like cats and dogs is the  attractive appearances and their loyal or playful personalities.
And do you know of them is more popular, I mean between cats and dogs?
One thing pet owners can get from their pets is  physical and emotional benefits.
I guess, what are those benefits specifically?
some of these include exercise, fresh air, and social interaction if an owner decides to take a walk with his pet
It is important for dogs to be walked, I don't know much about cats, but I've never seen them been walked, only  walking by themselves.