Thagomizers (yes, true "Far Side" fans know that's their real name), named for the late Thag Simmons, provide tailside protection for what species? (edited at 11:51 am, September 22, 2015 (CST))
Original question: Thagomizers (yes, true "Far Side" fans know that's they're real name), named for the late Thag Simmons, provide tailside protection for what species?
stegosaurus