noun (n)

• all the animal life in a particular region or period(noun.group)

  Example:
  The zoology of the Pliocene epoch.
  

  Synonym:
  fauna
  Antonym:
  botany, flora, vegetation
  

  source: wordnet30
• the branch of biology that studies animals(noun.cognition)

  Synonym:
  zoological science
  

  source: wordnet30