#animal_group  a group of animals
  subtype:  team.animal_group  brood  flock  flock.animal_group  herd  herd.animal_group  pack.animal_group  pod  pride.animal_group  clowder  school.animal_group  animal_colony  organism_colony  swarm  warren  breed.animal_group  drove  litter.animal_group
  member of:  fauna
  supertype:  biological_group  a group of plants or animals
     supertype:  group__grouping  any number of entities (members) considered as a unit
        supertype:  collection  something gathering separated things (entities/situations)
           supertype:  divisible_entity__divisibleentity  many classifications under this category are application-dependant
              supertype:  entity  something that can be "involved" in a situation
                 supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
              supertype:  divisible_thing__divisiblething
                 supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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