SEALS. 219 



another representative of the same family, called viver- 

 ridae. 



The hyenas live in warm climates of the Old World ; 

 at night they infest cemeteries, disinterring the ca- 

 davers ; but they are afraid of man, and attack him 

 only when excited by the last pangs of hunger. A 

 characteristic which enables one to recognize the hyenas 

 when once seen is their curious oblique walk and the 

 strange appearance presented by the hind quarters, 

 which are always lower than the foreparts. 



PINNIPEDIA. 



The pinnipedia resemble the terrestrial carnivora in 

 their complete dentition, their cutting molars, and their 



FIG. 148. 



COMMON SEAL (Phocidx vitulina) ; attitude when swimming. 



carnivorous diet ; but they are distinguished by the form 

 of the limbs, which are short, arranged like fins, and 

 not adapted for terrestrial locomotion, and by their gen- 

 eral form, which is elongated like that of a fish ; the 

 head resembles that of a dog. 

 The otariidae, or fur-seals, differ from the other seals in 



