DOMESTICATED ANIMALS 



45 



the different kinds of mammals have come) had 

 five toes on each foot. Many mammals still retain 

 this five-fingered style of foot. Man does. So 

 do the monkey and the elephant. But many spe- 



"UNUSED TOES OF THE COW! 



cies have lost one or more toes from each foot. 

 The hippopotamus has lost one toe from each foot 

 and has four left. The rhinoceros has lost two, 

 and has three left. A large number of species, 

 like the cow, have lost three, and have two left. 

 And the horse has lost four and has only one left. 

 The horse walks on its big finger. In all of these 



