Or should it be ... DANGEROUS ...BUT FUNNY !?
Gybbon's arm-hanging, hand-swinging method of movement, known as brachiation, makes this ape as probably the best acrobat in the world. Hylobates lar may be this naughty individual shown in the video, taunting two young tigers:
http://www.youtube.com/watch?v=fPXkUXXFoCw&feature=youtube_gdata_player
