CARNIVOROUS QUADRUPEDS. 



65 



105. The Walrus, Fig. 47, is an aberrant species. In 

 general form and habits it is like the larger Seals. Its 

 ^_., .^ chief peculiarity is the 



great length of the ca- 

 nine teeth of the upper 

 jaw, sometimes reach- 

 ing to two feet. These 

 tusks are of service in 

 defense,in progression, 

 and in gathering its 

 food. It resists with 

 them the attacks of 

 the Polar Bear ; it uses 

 them as hooks in clam- 

 Fig. 47.-,-wain. ^ boring up rocks and 

 icebergs, and it draws up with them the seaweed which 

 is a part of its food. It is found in the Arctic regions of- 

 both hemispheres, and is sought after for its oil and its 

 tusks. 



Questions. What are included in the family of Ursidse ? Why are 

 they called Plantigrade animals ? What are Digitigrade animals ? 

 How far are the Ursida3 carnivorous ? What is an omnivorous ani- 

 mal ? What are the habits of this family ? What is the type-genus 

 of the family ? How many species are there of this genus, and where 

 are they found ? What is said of their structure ? What of their usef ul- 

 ness to man ? What is said of the Grizzly Bear ? What of the Polar 

 Bear? What are some of the aberrant species of the Ursidas ? What 

 is said of the Eaccoon? Of the Badger? Of the Wolverine? Of 

 the Kinkajou ? What are the Phocidae ? Why are they called am- 

 phibious ? Describe the structure and habits of Seals. What is said 

 of their usefulness to man ? Where are they found ? Describe the 

 common Seal. What is said of the Elephant Seal? Of the Fur 

 Seal ? Of the Walrus ? 



