#hoof.horny_structure  the horny covering of the end of the foot in hoofed mammals
  supertype:  #horny_structure__hornystructure__unguis  any rigid body structure composed primarily of keratin
  part of:  #hoof  the foot of an ungulate mammal
     part of:  #ungulate__hoofed_mammal  any of a number of hoofed mammals superficially similar but not necessarily closely related taxonomically

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