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