44 



The Care of Animals 



the rabbits from burrowing out, the walls must be car- 

 ried down deep into the earth, or else the floor of the 

 yards must be paved or covered with chicken- wire. 



Fig. 13. Belgian hares 



Rabbits are fond of burrowing, and it is therefore 

 generally considered beneficial to have the floors of dr^^ 

 earth. If the pens are kept well littered with straw or 

 similar material, the animals seldom dig much, but if 

 they once get access to the earth they will burrow rapidly. 



