Tibbles vs house cat

Tibbles

name
  • A surname originating as a patronymic. 

house cat

noun
  • A domestic cat, Felis catus or Felis silvestris catus, commonly kept as a pet animal. 

  • A pet cat that is confined to, or almost permanently resides, inside the house. 

How often have the words Tibbles and house cat occurred in a corpus of books? (source: Google Ngram Viewer )