Tt?orRin<j life 



ness of a standing chipmunk, and the alert and 

 capable attitude of an erect and listening grizzly 

 bear. 



The beaver is larger than most people imagine. 

 Mature male specimens are about thirty -eight 

 inches in length and weigh about thirty -eight 

 pounds, but occasionally one is found that weighs 

 seventy or more pounds. Ten mature males which 

 I measured in the Rocky Mountains showed an 

 average length of forty inches, with an average 

 weight of forty-seven pounds. The tails of these 

 ten averaged ten inches in length, four and a 

 half inches in width across the centre, and one 

 inch in thickness. Behind the shoulders the 

 average circumference was twenty -one inches, 

 and around the abdomen twenty-eight. Ten ma- 

 ture females which I measured were only a trifle 

 smaller. 



There are twenty teeth; in each jaw there are 

 eight molars and two incisors. The four front 

 teeth of the beaver are large, orange - colored, 

 strong, and have a self-sharpening edge of enamel. 

 The ears are very short and rounded. The sense 

 of smell appears to be the most highly developed 



7 



