96 HANDBOOK OF NATURE STUDY 



person who feeds them and cares for them ; they also show 

 a certain amount of love and devotion towards him; but 

 none except the dog have any idea about their master's 

 property. A good dog will follow none but his master or 

 a good acquaintance; he will not permit a stranger to take 

 or even touch any of his master's property. He. learns to 

 recognize the extent of a lot or yard, and even the boundary 

 of a small farm. If a stranger attempts to drive him away 

 from his own territory, he shows his teeth in reply ; but if 

 not on that territory, he generally runs at anybody's order. 

 He even seems to know that small children are not quite 

 responsible for their acts, as he will endure much cruelty 

 on their part which he resents if offered by grown persons. 

 Many a dog will rush to assist his master if the latter is 

 assaulted, and almost everybody knows some well-authen- 

 ticated story where a dog saved the life of a person. Have 

 dogs good memories ? Compare the intelligence of the 

 horse with that of the dog. 



The senses of hearing and of smell are very acute in the 

 dog. That dogs can follow the tracks of animals and men 

 by scent alone seems almost incredible to us whose sense of 

 smell is not very keen. Their sense of sight is also well 

 developed, but as they do not stand as high as a man, 

 objects which we plainly see are often hidden from their 

 view. 



A dog has three kinds of teeth. His front teeth are 

 called incisors. They are rather small; he uses them to 

 peel off flesh from bones. His eyeteeth are very long, and 

 with them he can hold an animal and inflict fearful wounds. 

 The eyeteeth are also called canines. Behind the canines 

 are the molars. These are very strong, and in chewing 

 they cut or crush the food. His jaws are worked by 



Observations. Where can you find hazel, red osier, sumach, wild 

 grapevine, Virginia creeper, false bittersweet, wahoo or burning bush. 



