Level 25 Dexterity as well as a ring of charos are required to gain access to this activity. While having really similar experience rates per hr to the Ardougne Agility Course, the chance to obtain the gigantic squirrel family pet is around 15% higher at the Dorgesh-Kaan Dexterity Course. Roof Dexterity Courses were presented to Old School RuneScape on 5 December 2013.