bezoar goat vs bezoar ibex

bezoar goat

noun
  • A wild goat, Capra aegagrus, native to Asia Minor and the Middle East and also found on Crete, now believed ancestral to the domestic goat. 

bezoar ibex

noun
  • The bezoar goat. 

How often have the words bezoar goat and bezoar ibex occurred in a corpus of books? (source: Google Ngram Viewer )