136 SPECIAL EXPRESSIONS: Chap. V. 



Anger. — This emotion is often exhibited by many- 

 kinds of monkeys, and is expressed, as Mr. Martin re- 

 marks, 13 in many different ways. " Some species, when 

 irritated, pout the lips, gaze with a fixed and savage glare 

 on their foe, and make repeated short starts as if about 

 to spring forward, uttering at the same time inward gut- 

 tural sounds. Many display their anger by suddenly 

 advancing, making abrupt starts, at the same time open- 

 ing the mouth and pursing up the lips, so as to conceal 

 the teeth, while the eyes are daringly fixed on the enemy, 

 as if in savage defiance. Some again, and principally 

 the long-tailed monkeys, or Guenons, display their teeth, 

 and accompany their malicious grins with a sharp, 

 abrupt, reiterated cry." Mr. Sutton confirms the state- 

 ment that some species uncover their teeth when en- 

 raged, whilst others conceal them by the protrusion of 

 their lips; and some kinds draw back their ears. The 

 Cynopithecus niger, lately referred to, acts in this man- 

 ner, at the same time depressing the crest of hair on its 

 forehead, and showing its teeth; so that the movements 

 of *the features from anger are nearly the same as those 

 from pleasure; and the two expressions can be distin- 

 guished only by those familiar with the animal. 



Baboons often show their passion and threaten their 

 enemies in a very odd manner, namely, by opening their 

 mouths widely as in the act of yawning. Mr. Bartlett 

 has often seen two baboons, when first placed in the 

 same compartment, sitting opposite to each other and 

 thus alternately opening their mouths; and this action 

 seems frequently to end in a real yawn. Mr. Bartlett 

 believes that both animals wish to show to each other 

 that they are provided with a formidable set of teeth, as 

 is undoubtedly the case. As I could hardly credit the 



13 A T 



Nat. Hist, of Mammalia, 1841, p. 351. 



