OS X Version 10.9: SERVAL
OS X Version 10.9.Awwdorable: BLACK-FOOTED CAT
OS X Version 11: AFRICAN GOLDEN CAT
OS X Version 11.1: ANDEAN MOUNTAIN CAT
OS X Version 11.2: EURASIAN LYNX
OS X Version 11.3: JUNGLE CAT
OS X Version 11.4: LITTLE SPOTTED CAT
OS X Version 11.5: MARGAY
OS X Version 11.6: SAND CAT
OS X Version 11.6.2CUTE: FLAT-HEADED CAT
OS X Version 11.7: IRIOMOTE, THE LIVING FOSSIL
OS X Version 11.8: KODKOD
OS X Version 11.9: MARBLED CAT
OS Y Version 1.0: PALLAS CAT (Colloquially: SNARF)
OS Y Version 2.0: FISHING CAT
OS Y Version 2.4.You: PAMPAS CAT
OS Z Version Infinity: LIL BUB