jaguar vs snow leopard

jaguar

noun
  • A carnivorous spotted large cat native to South and Central America, Panthera onca. 

snow leopard

noun
  • A large feline mammal, Panthera uncia (syn. Uncia uncia), native to mountain ranges of central Asia. 

How often have the words jaguar and snow leopard occurred in a corpus of books? (source: Google Ngram Viewer )