mule (n.)
- ass
 - bastard
 - bigot
 - bullethead
 - camel
 - cattalo
 - citrange
 - cross
 - crossbreed
 - diehard
 - dogmatist
 - donkey
 - dromedary
 - elephant
 - fanatic
 - half-breed
 - half-caste
 - hinny
 - horse
 - husky
 - hybrid
 - jennet
 - jenny
 - ladino
 - liger
 - llama
 - malamute
 - manlike
 - masculine
 - maverick
 - mestiza
 - mestizo
 - metis
 - mixed-blood
 - mongrel
 - mulatto
 - octoroon
 - ox
 - plumcot
 - positivist
 - purist
 - quadroon
 - reindeer
 - silkworm
 - spider
 - spinner
 - spinster
 - stickler
 - sumpter
 - tangelo
 - throstle
 - tigon