border--->Mammalia


dog
face(2) etc(3) 
cat
face(3) footprint(7)
etc(9)  
domestic animal
horse(3) pig(2) 
small_mammals
rat(2) squirrel(1)
fox(3) monkey(1)
hamster(1) rabbit(1)
うさぎ顔(1)  
bigsize_mammals
tiger(4) panda(5)
bear(3)