Suspensory behavior

Suspensory behaviour is a form of arboreal locomotion or a feeding behavior that involves hanging or suspension of the body below or among tree branches.

[5] Combined, these morphologies allow for the infraspinatus muscle to be repositioned creating more resistance to trans articular tensile stress for suspending below a branch.

These animals also have longer clavicles, creating a bigger projection of the shoulder which increases the ability to move when the forearm is raised above the head.

[9] Suspensory locomotion aids with reducing path lengths and covering longer distances by moving faster through branches and trees above.

[3] While this type of locomotion can be beneficial there can be some consequences when dealing with extreme heights as vigorously moving through the trees allows for more opportunity for injury.

[13] Suspension helps them reach fruits and other vegetation that might be difficult to obtain on foot, while allowing them to cover a large distance at a greater speed.

[2][13] Often in arboreal regions, flowers, fruits and other plants are located on small terminal branches and suspension enables animals to access this food while saving time and energy.

[14] Hanging by the tail is very common when foraging which permits the use of the hands and arms to not only grab food but to catch themselves if they were to slip or fall.

Speed allows animals to minimize competition while avoiding predators to ensure they grab as much food as they can in a short period of time.

Suspensory behavior seen in ruffed lemur ( Varecia variegata )
Roosting behaviour in flying foxes ( Pteropus conspicillatus )
Pygmy marmoset ( Cebuella pygmaea ) climbing tree
Composite image of a juvenile proboscis monkey ( Nasalis larvatus ) learning to leap from one tree to another
Feeding while suspended from a rope