12 NATURE STUDY LESSONS FOR PRIMARY GRADES 



was frightened, or ashamed, he carried his tail down 

 between his legs.) 



The children might review the whole subject of 

 shepherd dogs by going with Prince after the 

 sheep. 



Do you think shepherd dogs are useful? What 

 have we found that they can do ? What other help- 

 ful things have you seen them do? 



Other species of dogs familiar to the children may 

 be studied by comparison with the above, thus : — 



What other kind of dogs do you know? One 

 has a rat-terrier. How many have seen one ? 

 (Probably all.) How does a rat-terrier help us ? 

 (Catches rats.) How is it that he can catch rats 

 better than a shepherd dog can? (a) He is much 

 smaller. How does this help him? (He can go 

 under piles of rubbish and into holes where a 

 shepherd dog could not go.) {b) He is quicker in 

 his movements. How does this help? (A rat runs 

 fast. A dog must be very quick to catch it.) 

 (c) His cutting and biting teeth are smaller and 

 sharper than those of a shepherd dog. (d) His hair 

 is straight, short, and stiff, and lies down close to his 

 body, so he can more easily get into holes than the 

 shepherd dog with his long, thick, curly hair. 



