The Siamang, native to Southeast Asia, is the largest of the gibbons with an arm length of 1.5 meters. Considered a lesser ape, gibbons are known for their remarkable gymnastic ability. They live an arboreal life, high above the forest floor. Their long arms have evolved to allow for a graceful, almost ballet-like movement as they swing from branch to branch. This specialized form of locomotion is referred to as Brachiating.nnSpecifications:nn1:1 scalenPolyurethane resin castn2-part skull (separate cranium & jaw)nnSkull Length 12.9 cm (5.1 in.)nSkull Width 8.1 cm (3.2 in.)nSkull Height 10 cm (3.9 in.)nnProduct of Bone ClonesnnPlease be advised that this product is made to order and will require additional lead time. For further information about the availability and turnaround time of this item, please contact our customer service team at 1-800-659-SKULL.