The two classes in World of Warcraft that have access to pets and
rely heavily on them for success are the hunter and the warlock.
Pets are secondary characters that you can control. They are
simpler and weaker than a full-fledged character class, but they
provide extra power and support for your main character. Some
pets are offensive in nature and join you in attacking your
enemies. Some are more defensive, and occupy your target so
you can attack from range without fear of retaliation. There are
also more unusual pets with less easily defined abilities.