224 ANIMAL INTELLIGENCE 



motor activity. The tail movements and carriage are 

 definitely related to the character of the animals, and 

 to those that watch them closely express distinct and 

 varying phases of emotion, etc. 



The antipathy of the cat to the dog, while related to 

 a psychic state, based on self-preservation from intruders, 

 is peculiarly marked towards the dog, though whether 

 more so than towards any other similar animal, or, 

 towards, say a large part of the animals that might be 

 found in any menagerie, is one that I have not investi- 

 gated. I have been very much impressed by the fact, 

 that at an early age the kitten, when suddenly disturbed 

 in any way, reacts much as if a dog had come upon it, 

 though in a less marked manner. 



Nevertheless, the behaviour of a kitten, even a few 

 days after its birth, towards even the srnell of a dog on 

 the hands, is very suggestive of an instinctive fear or 

 dislike of the dog. At the same time, I have seen a 

 kitten act much the same when an irritant was placed 

 near its nose, or, after it could hear, when it was 

 startled by a noise. This subject is worthy of further 

 study. 



Equally striking in the kitten, as in the puppy, is 

 the rapidity with which the creature tires under any 

 sort of stimulus, especially within the first twenty days 

 of life. After a few trials, sometimes after the very 

 first one, the smell of a dog ceases to produce the re- 

 action in the cat during the blind period, and unless 

 one is aware of this, all sorts of erroneous conclusions 

 may be drawn regarding very young animals. This 

 tendency to rapid fatigue indicates, in reality, both why 

 the animals do sleep and must sleep so often. I am 

 quite satisfied that any sort of irritation, whether from 

 within or from without, that will prevent frequent 

 periods of sleep occurring, will disorder the health and 

 even cause death in young animals, and I believe this 



