210 ANIMAL INTELLIGENCE 
24th day.—To-day a puppy follows a fish-bone by 
smell, and attempts to bite at it. 
25th day—The appearance of the eyes show an 
advance over a few days ago. 
When the dam is brought within 6 to 8 feet of the 
puppies they seem to become aware of her presence by 
smell first of all, but when within a few feet of them 
they follow her with the eyes. 
There is a decided improvement in locomotion. 
The puppies now have all the upper incisors, the 
canines above and below, and two molars above and 
two below. 
Hearing is now very acute. A very feeble “Hist!” 
when within a couple of feet, causes movement of the 
ears, turning of the head, and an expression of the 
face that indicates clearly that the puppy hears. 
A “Hist!” of moderate intensity is heard readily at 
5 feet. 
There is a tendency now, when any object is placed 
before the puppies, to growl or bark at it in a meaning- 
less way. 
31st day.—To-day a slight sound caused a starting. 
The puppy (henceforth the only one) seems to have 
reached that period when hearing, as a mere sensation, 
is perfect, but the interpretation of sounds very 
imperfect, hence he is startled by many sounds that 
later produce no such effect. When a bone is placed 
within 4 inches of him he sniffs at it, and gets up to 
secure it. 
He makes the first attempts at gnawing a bone, using 
his paws to steady himself, and once lifts a paw as if to 
place it on the bone, but does not actually do so. 
The puppy now evidently sees small objects at some 
distance quite well. 
He now stands quite erect on his legs, and to-day 
climbs over the rungs of a small rocking-chair, 
C= 
