CLASS MAMMALS: OKDEE CABlflVOBA- 



45 



an approach to the amphibious mammals. The pecnliar 

 position of its eye enaliles it, with a slight motion of the 

 head, to see the fish on which it jireys. whether swimming 

 above, below, beside, behind, or before. It burrows in the 



Fig. SB 



Ultra eanadeneu. Otter. ^. 



banks of streams, forming the entrance under water, and 

 providing numerous cells to occupy, according to the height 

 of the stream. Its pastime of sliding in companies into the 

 water, down a suow-bank in winter and a slipper}- clay-bank 

 in summer, presents a singular 

 feature of animal Ufe. 



Ursidae. — The Bear is a typical 

 exam.ple of a plantigrade (see Glos- 

 sary). The entire sole of the foot 

 applied to the ground: the broad, 

 flat crowns of the molars; large, 

 curved, non-retractile claws; smooth 

 tongue : mobile nose ; circular pu- 

 pils, and short tail, exhibit such 

 variations from the strictly carniv- 

 orous animals as betoken different ^- sMe mew of Bear's, jpper jaw. 



. h. Top mew of Beam lower jaw. 



habits of life. Bears are carmvorons c. siaemewo/jawesitvi. 



