PRP Star Wars - #29 Hammerhead
According to Wookiepedia:
Ithorians were a mammalian herbivorous sentient species from the planet Ithor. They were commonly called "Hammerheads" by less sensitive beings because of their long, curving neck and T-shaped head. They found this nickname offensive.
Oops... Didn't mean to offend any Ithorians out there.
Ehhhh... Who cares. They are a bunch of drunks anyway. Seriously. I've only ever seen 'em in the cantina.