Donkey at Wikipedia
The donkey or ass (Equus africanus asinus)[1][2] is a domesticated member of the horse family, Equidae. The wild ancestor of the donkey is the African wild ass, E. africanus. The donkey has been used as a working animal for at least 5000 years.
Someone else gets to shoulder the burden. now
“Lazy Ass!!”
Image courtesy of http://cheezburger.com/4237238272.
See:
Quipster 