Comment 6 for bug 289343

For what it's worth, drake (a type of duck), eft (a newt, like a lizard), and gibbon (a kind of monkey or ape) aren't ones your average English-speaker knows either. I think most of us end up consulting a dictionary when the next animal is announced. They're always animals, though.

This is an ibex: http://www.ics.uci.edu/~eppstein/pix/lazoo/Ibex-m.jpg