Indy, an [censored] is an [censored], whether jack(male) or jennet(female) or elephant. All donkeys are asses, assinus equinus, but not all asses are donkeys. I don't know where you got that quote but they are an [censored].
That is what I get for quoting Yahoo answers.

With a few wild-child politicians aside, most seem domesticated, so I would call them all donkeys. Jackass just comes to mind once they open their mouths.