130 ANIMAL INTELLIGENCE 



ing rapid movements of the head, and it almost seems 

 as if they have some of that sense of fun, or whatever 

 it may be, that we witness in older dogs under similar 

 circumstances. 



They can now follow a small object at the distance 

 of at least 1 foot ; and at 5 feet they can follow the 

 movements of an object the size of a table-napkin. 

 Both the eyes and head are moved. 



On striking a single blow on the bottom of a water- 

 ing-can, they all rushed off to the distant part of the 

 pen, with all the expressions of fear. 



They are now well supplied with teeth in both jaws, 

 but in regard to this also there are individual differences. 



They play much more. 



Being rather chilly to-day they huddle together. 



Same day at 7 P.M. When all are playing a slight 

 but well-defined sound causes them all to stop at once. 



When the hand is put down in front of them, after 

 they recover, one comes up wagging the tail. 



The eyes are now very widely open, the expression 

 changed, and they can follow the movements of 

 a table-napkin at a distance of 6 to 7 feet, but 

 winking by the old test is not appreciably more pro- 

 nounced. 



One of the puppies, when placed on the floor of the 

 kennel covered with sawdust, plays about, cries, and is 

 evidently very uneasy, if not confused. When put on 

 the top of the box on which they are usually fed, it 

 sniffed and looked towards the white plate from which 

 they drink their milk. When held in the arms it soon 

 manifests uneasiness; when placed near the edge of 

 the box it grows very uneasy, but does not jump off. 

 Almost at once, when placed back in the pen, it became 

 quiet, and soon began to play. By its movements 

 it indicates clearly that the direction of sound is 

 perceived, 



