Some things are true for a variety of pets you might choose. All pets with nails will probably need them clipped. All pets with teeth will probably need them cleaned. All animals with eyes are ears can get infections. Here is an overview of the very basics things.
Cats and dogs wear down their nails through normal wear and tear, but to save from accidental scratches, torn furniture and ingrown nails, trimming is something you will have to do.
Long hair or short, a brush is in your future unless you want to start finding a groomer to do this for you. Obviously the thick coated arctic breeds are going to take a lot more work than a sphinx.
But all pets need to be clean and dry to live happy, healthy lives.
Yes. They need you. You need to spend time with them daily in play or cuddles. They really just want you around.