212 A COURSE ON ZOOLOGY. 



but the other three species named are more carnivorous 

 in diet, and the grizzly and polar bears are dangerous 

 adversaries in combat. The black and brown bears, when 

 fully grown, are about six feet long, and have at the 

 shoulder a height of about three feet. The grizzly is 

 larger, and the polar bear is often nine feet long. 



CYNOIDEA. 

 This group includes wolves, foxes, jackals, and dogs. 



FIG. 138. 



WOLF. 



The European wolf is very like the gray wolf of North 

 America. Its color is a slightly yellowish gray, with 

 some black hairs intermingled. It is about the size of a 

 large dog, its height at the shoulder being between two 

 and two and a half feet. In the farming countries of 

 Europe it frequently does great damage to the flocks, 

 and when pressed by hunger will attack man ; but it is 



