THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 223 



and that they are drawn towards the belly of the 

 mother by the warmth of the part. 



In both the dog and the cat there is a long latent 

 period in the case of reflex movements from a pinch, 

 etc., as compared with such an animal as the rabbit, 

 though there can be no doubt that the tactile sensibility, 

 the capability of feeling pain, and the temperature 

 sense, as well as feeble motor power, hardly worthy the 

 designation (voluntary), exist in the dog and the cat at 

 birth. 



I am not prepared either to affirm or deny that taste 

 and smell are present at birth, but if they do exist, I 

 am quite sure they are of the feeblest, of very little use 

 to the animal, and play but a very subordinate part in 

 its life during the blind period. 



The kitten is at first, if not always, more sensitive to 

 a touch, has finer tactile sensibility about the mouth 

 than the puppy. 



There are the same individual differences as to the 

 exact date of the opening of the eyes, the eruption of 

 the teeth, etc., in the kitten as in the puppy. 



The dog and the cat resemble each other in the 

 slowness with which they acquire power over the hind 

 limbs. 



Neither the puppy nor the kitten have any appreciable 

 voluntary control over the tail during the blind period, 

 but the dog finally uses the tail much more than the cat 

 in the expression of his emotions. What the dog does 

 with his tail the cat often expresses by purring, which, 

 as I have shown in the paper on the cat, is developed 

 somewhat late much later than the friendly wagging 

 of the tail in the dog ; and as will be seen by a com- 

 parison of the notes (diaries) on the dog and on the cat, 

 while there are definite stages in tail carriage for each, 

 these are different altogether for the two animals, and 

 herein we notice a far greater difference than in loco- 



