saber-toothed cat vs sabre-toothed tiger

saber-toothed cat

sabre-toothed tiger

noun
  • Any of numerous species of extinct cat-like mammals, of the Machairodontinae subfamily of the Felidae. 

How often have the words saber-toothed cat and sabre-toothed tiger occurred in a corpus of books? (source: Google Ngram Viewer )