128 ANIMAL INTELLIGENCE 
one case the nose is all but covered with the character- 
istic black pigment, though this one is in advance of 
the others in this respect. 
23rd day.—On my return on this day a long time 
was spent with the puppies, and the following noted: 
The dam is no longer so much inclined to stay with 
her offspring, and does not wish to suckle them so 
frequently. 
The puppies are fed on the top of a large box, two at 
atime. It is found that unless straw is placed on the 
top of the box the puppies will not feed. They decline 
to take half milk and water any longer, but must have 
richer food, and considerable attention must be paid to 
the temperature of the liquid. 
Great improvement is noticed in lapping milk, 
though one is observed attempting to gulp the milk as 
it were (hunger, etc.). 
Soon after feeding, the finger placed in the mouth is 
not sucked but rather chewed. 
The readiness with which all sorts of sounds are 
heard, even when some distance away, is striking. 
The puppies now follow a small object or a piece of 
paper (2 by 3 inches) held within a few inches of the 
face. 
Much growling in play, also more advanced use of 
tail. They also wag the tail now sometimes when an 
object is presented to them, or when anything pleases 
them. They turn the head quickly towards any part 
of the body gently pinched. 
On pinching one of them frequently and rapidly 
much irritation is shown by the voice, expression of 
face, ete. 
They now very frequently stand with the paws on 
the edge of the enclosing boards of the pen, and show 
that they would like to get out, The height of the pen 
is now about 15 inches. 
