Your leadership level allows you to command pets. Each 5 levels allows you to lead 1 more creature (untrained or trained), so at level 5, you can control 2 pets. You can increase your leadership skill by a total of 10 through upgrading the palace clan building.
If at it's maximum level, an option will become available for you to automatically stop hunting when you reach the maximum number of creatures available to trap (11).
Learning level: 7
Max level: 50