When you contract the attached muscles (subscapularis muscle, the supraspinatus muscle, the infraspinatus muscle, and the teres minor muscle), they pull on the tendons causing the shoulder to rotate up or down, back or front, in or out; hence the name 'rotator' cuff.
Acinonyx jubatus portrait. Â© 2007 Mark Probst. The cheetah is a big cat and is now, mainly found in southern Africa. It is known for its speed as it is able to accelerate from 0-60 miles per hour in only three seconds, and it is able to reach speeds of around 70 miles per hour (112 kilometers per hour).
The maned wolf (Chrysocyon brachyurus) is the largest canid of South America. Its markings resemble those of foxes, but it is not a fox, nor is it a wolf, as it is not closely related to other canids. It is the only species in the genus Chrysocyon (meaning  golden dog ).