The Cub Scout program is designed for boys of many different ages. To keep Cub Scouting a challenge for boys as they get older, Cub Scout ranks were created with different sets of requirements and activities for each rank. As the Cub Scouts grow older, they progress to more challenging ranks. There are basics that all Cub Scouts must know (except for Tiger Cubs). They are contained in the Bobcat program. All Cub Scouts must earn their Bobcat Badge before they can work on the badge of their rank (Wolf, Bear, or Webelos).

Boys who are in the first grade or are seven years old may join the Tiger Cubs. At the end of the school year, they graduate and become part of a Wolf Cub Scout den. The Wolf den is made up of boys who are in second grade or are eight years old. The Bear Cub Scout is next. Bear Cub Scouts must be in the third grade or be nine years old. When they complete the third grade or reach the age of ten, they graduate to Webelos. Although Cub Scouts of any rank or age can attend day camp, only Webelos can go on Scouting trips which include camping out overnight. The Arrow of Light, Cub Scouting's highest award, can only be earned by Webelos Cub Scouts. Upon reaching the age eleven or graduating from the fifth grade, Webelos are eligible to become Boy Scouts.