It's just a joke, sorry. I'm well aware humor isn't appreciated around here and actually I understand it because humor is a slippery slope ending in reddit-style banal meme-threads, but every once in a while I can't help myself and karma be damned.
Banthas are the large beasts-of-burden on Tatooine. Bothans are humanoid aliens with cat/dog-like faces. Why do I know that? I play a lot of Star Wars video and card games :)
EDIT: just googled for the quote. The full one is "Many Bothans died to bring us this information."
Oh yes ... but I now have this irresistible vision of Vader and the Emperor walking through the Death Star landing bay, with a 12 foot long haired Bantha tiptoeing behind the massed ranks of Stormtroopers trying to look inconspicuous in a red cloak and disguise